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The minimum percentage of associated revenues for drilling and directional services services that is required to be purchased under a contractual obligation.

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The value (monetary amount) of the award the defendant seeks in counter damages in the legal matter.

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Deficiency payment for the shortfalls in delivering the minimum volumes the entity is contractually obligated to under annual minimum volume commitments of gas and condensate.

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Represents the period after the closing of the proposed combination transaction that the entity has been given to comply with the terms of an agreement.

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The percentage of shareholders required to approve the action under the original transaction structure.

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Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of reorganization items related to discharge of claims and liabilities upon emergence from bankruptcy.

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Unrecognized cost of unvested share-based compensation awards.

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The amount of capital lease obligations and related accrued interest included in liabilities subject to compromise.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Commitments and Contingencies (Details) $ in Millions									3 Months Ended		9 Months Ended		12 Months Ended
Commitments and Contingencies (Details) $ in Millions	Aug. 10, 2015 USD ($)	Mar. 13, 2015 item	Feb. 26, 2015	Dec. 19, 2014 USD ($) item	Nov. 11, 2014 USD ($) item	May. 19, 2014 claim	May. 06, 2014 claim	Feb. 29, 2012 USD ($) item	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($) item	Dec. 31, 2013 USD ($)	Sep. 01, 2015 USD ($)	Jul. 15, 2015 USD ($)
Legal and Regulatory
Accrual in relation to legal proceedings									$ 28.4		$ 28.4
Asset retirement obligation									40.4		40.4		$ 48.8
Drilling and Other Services
Other Commitments
Minimum delivery commitment shortfall penalty										$ 0.0		$ 0.0
Minimum number of wells drilled \| item													1
Other Operating Income (Expense) \| Drilling and Other Services
Other Commitments
Minimum delivery commitment shortfall penalty									1.3		2.9
Other long-term liabilities
Legal and Regulatory
Accrual in relation to legal proceedings									26.4		26.4		$ 27.4
Liabilities Subject to Compromise
Legal and Regulatory
Accrual in relation to legal proceedings									2.0		2.0
Asset retirement obligation									9.4		9.4		9.4
Other Commitments
Liabilities Subject to Compromise, Capital Lease Obligations and Accrued Interest															$ 3.5
Liabilities Subject to Compromise \| Drilling and Other Services
Drilling and Completion
Rejection of secured rig and servicing contracts	$ 29.0
Other short-term liabilities
Legal and Regulatory
Asset retirement obligation													$ 9.4
Term Loan Facility
Legal and Regulatory
Borrowings outstanding																$ 650.0
2019 Senior Notes
Legal and Regulatory
Redemption price (as a percent)			101.00%
Nabors \| Drilling and Other Services
Drilling and Completion
Minimum hydraulic fracturing services revenue (as a percent)													20.00%
Minimum drilling and directional services revenue (as a percent)													75.00%
Revenue shortfall penalty (as a percent)													40.00%
Revenue shortfall and penalty													$ 0.0	$ 1.7
Forest Oil Corp. v. El Rucio Land & Cattle Co.
Legal and Regulatory
Number of members of arbitration panel with adverse decision \| item								2
Number of persons on arbitration panel \| item								3
Amount awarded to claimant								$ 23.0
Forest Oil Corporation Shareholder Litigation
Legal and Regulatory
Period to comply					120 days
Minimum period for one additional independent director					3 years
Number of additional independent directors \| item					1
Number of independent directors \| item					2
Number of directors with one added \| item		8
HPIP Gonzales Holdings, LLC
Legal and Regulatory
Number of persons on arbitration panel \| item				3
Number of agreements \| item					2
Damages sought against the company					$ 80.0
Damages to the company				$ 25.0
New York State \| Forest Oil Corporation Shareholder Litigation
Legal and Regulatory
Number of new claims \| claim							6
Shareholders required approval under original agreement (as a percent)							67.00%
Colorado State \| Forest Oil Corporation Shareholder Litigation
Legal and Regulatory
Number of new claims \| claim						1
2014 LTIP
Other Commitments
Accrued bonuses									3.1		3.1
Estimated future commitments									$ 9.4		$ 9.4