Accounts receivable, net
Accumulated other comprehensive income
Total Accumulated Depreciation, Depletion and Amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Additional paid-in capital
Amortization of debt issuance costs and discounts
Distributions from unconsolidated affiliates and other
Unrealized gain on derivative contracts
Unrealized Gain (Loss) on Derivatives
Realized and unrealized gains on commodity derivative instruments (see Note 7)
Amount that will be settled and reclassified from AOCI to Consolidated Statement of Income during the next twelve months
Restricted Stock [Member]
Stock Options [Member]
ARO liability at January 1,
ARO liability at March 31,
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations
Asset Retirement Obligation Disclosure [Text Block]
Accretion
Asset Retirement Obligation, Accretion Expense
Liabilities incurred
Liabilities settled
Asset Retirement Obligation, Liabilities Settled
ARO Liability [Roll Forward]
Asset retirement obligations
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]
CONDENSED CONSOLIDATED BALANCE SHEETS [Abstract]
Checks outstanding in excess of cash balances
Bank Overdrafts
Basic total
Net Property, Plant and Equipment
Capitalized Costs, Oil and Gas Producing Activities, Net
Total Property, Plant and Equipment
Capitalized Costs, Oil and Gas Producing Activities, Gross
Cash and cash equivalents
Beginning cash and cash equivalents
Ending cash and cash equivalents
Cash paid for interest
Changes in operating assets and liabilities
Increase (Decrease) in Operating Capital
Contingencies
Commitments and Contingencies Disclosure [Text Block]
Common stock, shares authorized (in shares)
Common stock, shares issued (in shares)
Common stock - par value $0.01 per share; 500.0 million shares authorized 178.4 million and 177.2 million shares issued, respectively
Comprehensive income attributable to QEP
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Gathering, processing and other
Gas Gathering, Transportation, Marketing and Processing Costs
Purchased gas and oil expense
Natural gas, oil and NGL transportation and other handling costs
Shipping, Handling and Transportation Costs
Total Current Liabilities
Liabilities, Current
Current Liabilities
Debt
Debt Disclosure [Text Block]
Total principal amount of debt
Debt issuance costs
Long-term debt, interest rate (in hundredths)
Maturity date of long-term debt
Senior loan maturing date
Less unamortized discount
Debt Instrument, Unamortized Discount
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table]
Long-term debt issuance costs paid
Payments of Debt Issuance Costs
Deferred income taxes
Deferred income taxes
Deferred Tax Liabilities, Current
Deferred income taxes
Deferred Tax Liabilities, Noncurrent
Defined Benefit Plans and Other Postretirement Benefit Plans [Domain]
Depreciation, depletion and amortization
Depreciation, Depletion and Amortization, Nonproduction
Collars Ceiling Price ($ per unit)
Derivative, Name [Domain]
Derivative - contract term
Derivative Asset, Fair Value, Gross
Derivative Liability, Fair Value, Gross
Collars Floor Price ($ per unit)
Derivative, Index
Commodity derivative instruments - short-term
Derivative Assets, Current
Total financial assets
Derivative Assets
Commodity derivative instruments - long-term
Derivative, by Nature [Axis]
Fair value of derivative contracts
Derivative Instruments and Hedges, Assets
Fair value of derivative contracts
Derivative Instruments and Hedges, Noncurrent
Derivative Contracts
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Total gain (loss) on commodity derivative instruments
Derivatives not designated as hedging instruments - Commodity derivatives [Abstract]
Commodity derivative instruments - short-term
Fair value of derivative contracts
Commodity derivative instruments - long-term
Derivative Liabilities, Noncurrent
Derivative [Line Items]
Derivative [Table]
De-designation of commodity derivative contracts
Diluted total
Distribution from Questar
Payments of Distributions to Affiliates
Income from unconsolidated affiliates
Income from unconsolidated affiliates
Total compensation expense related to share-based compensation
Share-based compensation
Share-Based Compensation [Abstract]
Gas, oil and NGL
Restatement Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Schedule of Error Corrections and Prior Period Adjustment Restatement [Table]
Abandonment and impairment
Abandonment and impairment
Exploration expenses
Exploration Expense
Net gain from asset sales
Gain (Loss) on Disposition of Assets
Net gain from asset sales
Gain (Loss) on Sale of Property Plant Equipment
Gathering, processing and other
Gas Gathering, Transportation, Marketing and Processing Revenue
General and administrative
CONSOLIDATED STATEMENTS OF INCOME [Abstract]
Cash paid (received) for income taxes
Restructuring Costs [Abstract]
Restructuring Costs [Abstract]
Potential number of shares issuable under the Long-term Stock Incentive Plan
Goodwill
Interest expense
Interest Expense
Interest Income [Member]
Interest and Other Income [Member]
Interest and other income
Interest Income, Operating
Inventories, at lower of average cost or market
Investment in unconsolidated affiliates
Issuance of Debt [Member]
Senior term loan [Member]
Lease operating expense
TOTAL LIABILITIES AND EQUITY
Liabilities and Equity
LIABILITIES AND EQUITY
Amount outstanding
Borrowing capacity
Amount borrowed at closing
Potential increased borrowing capacity
Senior term loan agreement amount
Senior term loan remaining availability
Line of Credit [Member]
Revolving Credit Facility [Member]
Long-term debt
Long-term Debt, Excluding Current Maturities
Total long-term debt outstanding
Noncontrolling interest
Net Cash Provided by Operating Activities
Net Cash Provided by (Used in) Operating Activities, Continuing Operations
FINANCING ACTIVITIES
INVESTING ACTIVITIES
OPERATING ACTIVITIES
Checks outstanding in excess of cash balances
Increase (Decrease) in Outstanding Checks, Financing Activities
NET INCOME ATTRIBUTABLE TO QEP
Net income attributable to QEP
Change in cash and cash equivalents
Dry exploratory well expense
Exploration and production
Total Revenues
Revenues from unaffiliated customers
OPERATING INCOME
Operating (loss) income
REVENUES
Basis of Presentation of Interim Consolidated Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Total pension and other postretirement plans adjustments
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax
Pension and other postretirement plans adjustments:
Other comprehensive income
Other Comprehensive Income (Loss), Net of Tax
Income tax benefit of reclassification of derivative gains and losses
Reclassification of previously deferred derivative gains and losses to net income
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax
Amortization of prior service cost
Unrealized gains on derivative contracts
Unrealized gains on derivative contracts, net of tax
Other Postretirement Benefit Plans, Defined Benefit [Member]
Other Postretirement Benefits [Member]
Dividends paid
Payments of Dividends, Common Stock
Contributions to unfunded pension plan
Employee Benefits
Pension and Other Postretirement Benefits Disclosure [Text Block]
Pension Plans, Defined Benefit [Member]
Pension Benefits [Member]
Amortization of actuarial loss
Amortization of prior service costs
Expected return on plan assets
Defined Benefit Plan, Expected Return on Plan Assets
Interest cost
Periodic expense
Defined Benefit Plan, Net Periodic Benefit Cost
Service cost
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Axis]
Other capital contributions
Proceeds from credit facility
Long-term debt issued
Proceeds from disposition of assets
Proved properties
Property, plant and equipment, including dry exploratory well expense
Payments to Acquire Oil and Gas Equipment
Property acquisitions
Payments to Acquire Oil and Gas Property
Materials and supplies
Repayments of credit facility
Repayments of Lines of Credit
Current portion long-term debt repaid
Repayments of Senior Debt
Distribution to noncontrolling interest
Payments to Noncontrolling Interests
Restructuring Costs
Restructuring and Related Activities Disclosure [Text Block]
Balance at December 31, 2011
Balance at March 31, 2012
Restructuring Reserve
Restructuring costs incurred to date
Restructuring and Related Cost, Cost Incurred to Date
Estimated restructuring costs
Costs paid or otherwise settled
Restructuring Reserve, Settled with Cash
Retained earnings
Revenues from affiliated companies
Natural gas sales
Natural gas sales
Purchased gas and oil sales
NGL sales
NGL sales
Oil sales
Oil sales
Capitalized Exploratory Well Costs
Capitalized Costs Relating to Oil and Gas Producing Activities Disclosure [Table Text Block]
Impact of change in transportation and other handling costs
Operations by Line of Business
Segment Reporting Disclosure [Text Block]
Summary of operating results by line of business
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment [Table]
Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Granted (in shares)
Weighted-Average Price, Granted (in dollars per share)
Balance, beginning (in shares)
Balance, Ending (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Weighted-Average Price, beginning balance (in dollars per share)
Weighted-Average Price, Ending Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Unrecognized compensation cost
Weighted-average period for recognition of compensation costs (in years)
Vested (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Total fair value of stock that vested
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]
Shares available for future grants
Intrinsic value of options exercised
Weighted-Average Price, Exercised (in dollars per share)
Forfeited (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Weighted-Average Price, Forfeited (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Granted (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures
Weighted-Average Price, Granted (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Fair value of options at grant date
Aggregate Intrinsic Value, Outstanding
Outstanding at December 31, 2011 (in shares)
Outstanding at March 31, 2012 (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Weighted-Average Price, beginning (in dollars per share)
Weighted-Average Price, Ending (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Options Excercisable (in shares)
Weighted-Average Price, Options Excercisable
Weighted-Average Remaining Contractual Term, Options Excercisable (in years)
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Award Type and Plan Name [Axis]
Share-based Compensation Arrangements by Share-based Payment Award, Award Type and Plan Name [Domain]
Transportation and other handling costs
CONSOLIDATED STATEMENTS OF CASH FLOWS [Abstract]
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
EQUITY
Subsequent Event Type [Axis]
Subsequent Event [Line Items]
Subsequent Event [Table]
Subsequent Event Type [Domain]
Derivative Contracts - Volumes and Prices
Cash flow hedge derivative instruments - Commodity derivatives [Abstract]
Swap [Member]
Excess tax benefit on share-based compensation
Total Current Assets
Assets, Current
Current Assets
Unproved properties, not being depleted
Used in diluted calculation
Average diluted common shares outstanding
Used in basic calculation
Weighted-average basic common shares outstanding
Subsidiaries [Member]
QEP Field Services [Member]
Property, Plant and Equipment (successful efforts method for gas and oil properties)
TOTAL ASSETS
Assets
Other long-term liabilities
Type of Restructuring [Domain]
Facility Closing [Member]
Termination of Lease [Member]
Employee Relocation [Member]
Reconciliation of QEP Energy's restructuring liability
Schedule of Restructuring and Related Costs [Table]
Share-Based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping, Disclosure Item Amounts [Axis]
Fair Value, Disclosure Item Amounts [Domain]
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents
Scenario, Unspecified [Domain]
Statement, Scenario [Axis]
ASSETS
Change in fair value of Level 3 assets and liabilities
Balance at January 1,
Balance at March 31,
Realized gains and losses
Level 3 Unobservable input reconciliation [Roll Forward]
Fair Value, Inputs, Level 2 [Member]
Level 2 [Member]
Fair Value, Inputs, Level 3 [Member]
Level 3 [Member]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Fair value and related carrying amount of certain financial instruments
Principal amount of senior notes outstanding
Net Cash Used in Investing Activities
Net Cash Provided by (Used in) Investing Activities, Continuing Operations
Net Cash Provided by Financing Activities
Net Cash Provided by (Used in) Financing Activities, Continuing Operations
Treasury stock - 0.7 million and 0.4 million shares, respectively
Treasury Stock, Value
Amortization of net actuarial loss
Income tax expense of amortization of net actuarial loss
Financial Assets
Financial assets
Other noncurrent assets
OPERATING EXPENSES
OPERATING EXPENSES
Total Operating Expenses
Operating Expenses
Earnings Per Common Share Attributable to QEP
Earnings Per Share [Abstract]
Costs incurred and charged to expense
INCOME BEFORE INCOME TAXES
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Parent Company [Member]
QEP Energy [Member]
Common stock, par value (in dollars per share)
Treasury stock (in shares)
Total Common Shareholders' Equity
Stockholders' Equity Attributable to Parent
Income taxes
Income Tax Expense (Benefit)
Capitalized exploratory well costs [Roll Forward]
Balance at January 1,
Balance at March 31,
Capitalized Exploratory Well Costs
Scenario, Previously Reported [Member]
Prior periods presentation of revenues
Capitalized Exploratory Well Costs [Abstract]
Capitalized Exploratory Well Costs (Tables) [Abstract]
Dividends per common share
Fair Value of Derivative Contracts, Gross [Abstract]
Financial Liabilities
Financial liabilities
Total financial liabilities
Derivative Liabilities
Marketing and other
Property, Plant and Equipment, Other, Gross
One-time Termination Benefits [Member]
Exercised (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Statement, Business Segments [Axis]
Options Outstanding [RollForward]
Weighted-Average Price [Abstract]
Weighted-Average Price [Abstract]
Restricted Shares Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Earnings Per Share
Earnings Per Share [Text Block]
NET INCOME
Net income
Net income attributable to noncontrolling interest
Net Income (Loss) Attributable to Noncontrolling Interest
Weighted-average common shares outstanding
Fair value of derivative contracts
Derivative Instruments and Hedges, Liabilities
Less Accumulated Depreciation, Depletion and Amortization
Depreciation, depletion and amortization
Other comprehensive income (loss), net of tax:
Comprehensive income
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Comprehensive income attributable to noncontrolling interests
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Total Equity
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Commitments and contingencies
Adjustments to reconcile net income to net cash provided by operating activities:
Long-term Debt, Type [Axis]
Nature of Business
Nature of Operations [Text Block]
Accounts payable and accrued expenses
Production and property taxes
Interest payable
Long-term Debt, Type [Domain]
Production and property taxes
Production Tax Expense
Additions to capitalized exploratory well costs pending the determination of proved reserves
Reclassifications to property, plant and equipment after the determination of proved reserves
Reclassification to Well, Facilities, and Equipment Based on Determination of Proved Reserves
Prepaid expenses and other
Segment [Domain]
Expected to contribute to unfunded pension plans
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurements, Fair Value Hierarchy [Domain]
Fair Value, Measurements, Recurring [Member]
Settlements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Basis of Presentation of Interim Consolidated Financial Statements [Abstract]
Capitalized exploratory well costs
Proceeds from issuance of debt
Fair Value, Hierarchy [Axis]
Fair Value by Measurement Frequency [Axis]
Asset retirement obligations roll forward
Contingencies [Abstract]
Fair Value Measurements [Abstract]
Subsequent Events
Subsequent Events [Text Block]
Debt [Abstract]
Debt Disclosure [Abstract]
Marketing and other
Employee Benefits [Abstract]
Pension and Other Postretirement Benefit Costs
Summary of stock option transactions under the terms of LTSIP
Schedule of calculated fair value of options granted and major assumptions used
Derivative Volumes and Average Prices
Long-term debt
Derivative Contracts [Abstract]
Derivative Contracts [Abstract]
Derivative Contracts [Abstract]
Letters of credit outstanding
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Table]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Debt Outstanding
Weighted-average interest rate (in hundredths)
Fair value of financial assets and liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring Cost and Reserve [Axis]
Operations by Line of Business [Abstract]
Operations by Line of Business (Details) [Abstract]
Operations by Line of Business [Abstract]
Subsequent Events [Abstract]
Senior Notes, stated interest rate, maximim (in hundredths)
Senior Notes, stated interest rate, minimum (in hundredths)
Supplemental Disclosures:
Income tax expense of amortization of prior service cost
Derivative Instrument Risk [Axis]
Expected life in years
Expected price volatility
Risk-free interest rate
Vesting period minimum (in years)
Vesting period maximum (in years)
Netting and Collateral [Member]
Components of basic and diluted shares used in EPS
Unrealized gains and losses
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Average Swap price per unit ($ per unit)
Weighted-Average Remaining Contractual Term, Outstanding (in years)
Aggregate Intrinsic Value, Options Excercisable
Restricted Shares and Performance Share Units Activity
Derivatives, Fair Value, by Balance Sheet Location [Axis]
Balance Sheet Location [Domain]
Derivatives, Fair Value [Line Items]
Commodity Contract [Member]
Costless Collars [Member]
Other Comprehensive Income (Loss) [Member]
Accumulated other comprehensive income (loss) [Member]
Income Statement and Other Comprehensive Income (Loss) Location [Domain]
Effects of Derivative Transactions
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) by Income Statement Location [Axis]
Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table]
Gain (loss) reclassified from AOCI into income for effective portion of hedge [Abstract]
Gain (loss) recognized in income for the ineffective portion of hedges [Abstract]
Interest and other income
Gain (loss) reclassified from AOCI into income for effective portion of hedge
Gain (loss) on derivative instruments for the effective portion of hedge recognized in AOCI
Derivative Contract Type [Domain]
Fair values of Derivatives by Balance Sheet Location
Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table]
Amendment Flag
Current Fiscal Year End Date
Document Period End Date
Entity [Text Block]
Entity [Domain]
Entity Well-known Seasoned Issuer
Entity Voluntary Filers
Entity Current Reporting Status
Entity Filer Category
Entity Public Float
Entity Registrant Name
Entity Central Index Key
Entity Common Stock, Shares Outstanding
Document Fiscal Year Focus
Document Fiscal Period Focus
Legal Entity [Axis]
Document Type
Total Volume (in Bcf, Mbbl, millions of gallons, millions of MMBtu)
Performance Share Units [Member]
Incremental common shares attributable to performance share units.
Senior Notes Due 2022 [Member]
Senior Notes Due 2022.
Senior Notes Due 2021 [Member]
Senior Notes Due 2021.
Senior Notes Due 2020 [Member]
Senior Notes Due 2020.
Senior Notes Due 2018 [Member]
Senior Notes Due 2018.
Senior Notes Due 2016 [Member]
Senior Notes Due 2016.
Derivative, Gain (Loss) by Income Statement Location [Domain]
The income statement and other comprehensive income location of gains and losses on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments, by income statement location.
Derivative, Gain Loss by Income Statement Location [Axis]
The location and amount of gains and losses reported in the statement of financial performance.
Derivative Instrument Contract Type [Domain]
The name that identifies a derivative or a group of derivatives, on a disaggregated basis, by contract risk type.
Derivative Instrument Contract Type [Axis]
Information by name that identifies a derivative or a group of derivatives by (derivative) contract risk type.
QEP Energy [Member]
QEP Energy Company, (QEP Energy) acquires, explores for, develops and produces natural gas, oil, and natural gas liquids (NGL).
Realized and unrealized gains on commodity derivative instruments [Member]
The income statement location of gains and losses on derivative instruments on derivative instruments not designated as hedging instruments, by income statement location.
NGL derivative contracts [Member]
Derivative instrument whose primary underlying risk is tied to commodity prices.
Oil derivative contracts [Member]
Derivative instrument whose primary underlying risk is tied to commodity prices.
Natural gas derivative contracts [Member]
Natural gas derivative contracts [Member]
Derivative instrument whose primary underlying risk is tied to commodity prices.
Energy Commodities Exchange Abbreviation [Domain]
Exchange abbreviation where various commodities and derivatives products are traded.
Energy Commodities Exchange [Axis]
Exchange where various commodities and derivatives products are traded
Derivative Contract Year [Domain]
Tabular presentation of derivative instruments by year of contract.
Derivative Contract Year [Axis]
Tabular presentation of derivative instruments by year of contract.
IFCNPTE [Member]
Energy Commodities Exchange Abbreviation.
Mt. Belvieu Propane [Member]
Energy Commodities Exchange Abbreviation
Mt. Belvieu Ethane [Member]
Energy Commodities Exchange Abbreviation
NYMEX WTI [Member]
Energy Commodities Exchange Abbreviation
NYMEX [Member]
Energy Commodities Exchange Abbreviation
IFPEPL [Member]
Energy Commodities Exchange Abbreviation
IFNPCR [Member]
Energy Commodities Exchange Abbreviation
Year 2013 [Member]
2013 [Member]
Derivative contracts which settle in 2012.
Year 2012 [Member]
2012 [Member]
Derivative contracts which settle in 2012.
Long-term [Member]
Derivative contracts with maturities in excess of one year.
Short-term [Member]
Derivative contracts with maturities of one year or less.
Marketing Purchases [Member]
Marketing Purchases.
QEP Field Services [Member]
All volumes and swap price transactions for commodity derivative contracts related to QEP Field Services.
Purchased Gas and Oil Expense [Member]
Derivative contracts recognized in income as purchased gas and oil expense.
Propane Sales [Member]
Propane Sales (Gals) [Member]
Derivative contracts to manage price risk on extracted NGL volumes.
Ethane Sales [Member]
Ethane Sales (Gals) [Member]
Ethane Sales - (ethane is a colorless, odorless gas)
NGL Sales [Member]
Derivative contracts to lock in a margin on NGL volumes placed into storage.
Oil Sales [Member]
Oil Sales (Bbls) [Member]
Derivative contracts utilized for oil sales.
Natural Gas Sales [Member]
Natural Gas Sales (MMbtu) [Member]
Derivative contracts to lock in a margin on natural gas volumes placed into storage.
QEP Marketing [Member]
Represents derivative contracts for QEP Marketing.
Fixed-price swaps [Member]
A forward-based contract in which two parties agree to swap streams of payments over a specified period. The payment streams are based on an agreed-upon (or notional) principal amount. The term notional is used because swap contracts generally involve no exchange of principal at either inception or maturity. Rather, the notional amount serves as a basis for calculation of the payment streams to be exchanged.
Unrealized gain (loss) on commodity derivative contracts not designated as hedging instruments
Represents the unrealized gain (loss) on commodity derivative contracts not designated as hedging instruments for the period.
Unrealized gain (loss) on commodity derivative contracts
Realized gain (loss) on commodity derivative contracts not designated as hedging instruments
Represents the realized gain (loss) on commodity derivative contracts not designated as hedging instruments for the period.
Realized gain (loss) on commodity derivative contracts
Increase (decrease) in non-cash capital expenditure accruals
Represents the increase (decrease) in non-cash capital expenditure accruals for the period.
Senior Term Loan Extension Period
Period of time for a subsequent extension to the senior term loan
Extension period (in years)
hare Based Compensation Arrangement By Share Based Payment Award Option Forfeitures In Period Weighted Average Exercise Price
The weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated during the reporting period due to noncompliance with plan terms during the reporting period.
Weighted-Average Price, Forfeited (in dollars per share)
hare Based Compensation Arrangement By Share Based Payment Award Options Unvested Weighted Average Exercise Price
The weighted-average price as of the balance sheet date for unvested stock options.
Weighted-Average Price, Unvested Options
Gain (loss) on derivative instruments for the effective portion of hedge recognized in AOCI [Abstract]
Forecasted production from proved reserves
Represents the forecasted production percentage from proved reserves.
Forecasted production from proved reserves (in hundredths)
Derivative volumes as a percent of production
Derivative volumes as a percent of production.
Derivative volumes as a percent of production (in hundredths)
Sharebased Compensation Arrangement By Sharebased Payment Award Options Unvested Intrinsic Value1
The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of unvested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date.
Aggregate Intrinsic Value, Unvested Options
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Weighted Average Remaining Contractual Term
The weighted average period between the balance sheet date and expiration for all unvested portions of options outstanding under the plan, which may be expressed in a decimal value for number of years.
Weighted-Average Remaining Contractual Term, Unvested Options (in years)
Commodity Derivatives as a Percentage of Production [Table Text Block]
Tabular disclosure of total commodity derivatives for each line of business as a percentage of production for that line of business.
Commodity Derivatives as a Percentage of Reported Production
Increase (Decrease) in Restructuring Liability [Abstract]
A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.
Increase (Decrease) in Restructuring Liability [Roll Forward]
Number of regional offices created
Represents the number of regional offices created from the closure of two divisional offices.
Number of division offices to be consolidated
Number of division offices to be consolidated.
Number of maturity date extentions
Represents the number of maturity date extensions allowed per the provisions of the credit agreement.
New accounting pronouncements [Policy Text Block]
Accounting policy related to new accounting pronouncements.
New accounting pronouncements
Share Based Compensation Arrangement By Share Based Payment Award Options Unvested Number
The number of shares into which unvested stock options outstanding as of the balance sheet date can be currently converted under the option plan.
Unvested Options (in shares)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Released in Period, Weighted Average Grant Date Fair Value
The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option released in period.
Weighted-Average Price, Vested (in dollars per share)
Share-based Compensation Arrangement by Share-based award, expected dividend yield, minimum
The estimated minimum dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.
Expected dividend yield
Derivative - Contract Year
The contract year for the derivative contract.
Checks outstanding in excess of cash balances, fair value disclosure
The fair value amount of checks outstanding in excess of cash balances whether such amount is presented as a separate caption or as a parenthetical disclosure.
Checks outstanding in excess of cash balances
Nature Of Business [Abstract]
Nature of Business [Abstract]
Accumulated Depreciation Midstream Field Services
Accumulated depreciation of natural gas gathering systems and treating plants.
Midstream field services
Midstream Field Services
Natural gas gathering systems and treating plants.
Midstream field services
Funded Pension Plan [Member]
Information on funded defined benefit pension plan.
Unfunded Pension Plan [Member]
Information on unfunded defined benefit pension plan.
Defined Benefit Plans Funding Type [Axis]
The funding type of defined benefit plan.
Plan Funding Type [Domain]
Information on defined benefit plan by funding type.
QEP Marketing and Other [Member]
QEP Marketing Company (QEP Marketing) markets affiliate and third-party natural gas and oil, provides risk-management services, and owns and operates an underground gas-storage reservoir. Other includes other marketing businesses.