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Annual report pursuant to Section 13 and 15(d)

DEBT AND CREDIT FACILITIES (Narrative) (Details)

v3.3.1.900
DEBT AND CREDIT FACILITIES (Narrative) (Details)
 3 Months Ended 12 Months Ended
Sep. 22, 2010
USD ($)
May. 27, 2010
USD ($)
Sep. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Aug. 11, 2011
USD ($)
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Letters of credit outstanding Ìý Ìý Ìý Ìý $ 186,300,000 $ 149,500,000 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý 3,448,200,000 3,980,000,000 Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý Ìý 392,900,000 16,200,000 $ 0 Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý 29,100,000 16,800,000 Ìý Ìý
Hedge Obligations [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Credit facility, amount outstanding Ìý Ìý Ìý Ìý (500,000) Ìý Ìý Ìý
Term Loan [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Long-term Line of Credit, Noncurrent Ìý Ìý Ìý Ìý Ìý Ìý Ìý $ 200,000,000
Amapa's Debt [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Repayments of Debt Ìý $ 100,800,000 Ìý Ìý Ìý Ìý Ìý Ìý
Senior Notes - $400 Million [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Repurchased Face Amount Ìý Ìý Ìý $ 1,300,000 36,000,000 5,000,000 Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý $ 400,000,000 400,000,000 Ìý Ìý
Note Redemption Price, Percent of Principal Amount to be Redeemed Ìý Ìý Ìý Ìý 100.00% Ìý Ìý Ìý
Redemption Price, Percent Of Principal In The Event Of Change Of Control Ìý Ìý Ìý Ìý 101.00% Ìý Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 290,800,000 $ 395,000,000 Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 5.90% 5.90% Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 5.98% 5.98% Ìý Ìý
Debt Repurchase Discount Ìý Ìý Ìý 58.00% 50.00% 38.125% Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý Ìý $ 1,900,000.0 Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý Ìý $ 67,000,000 Ìý Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý 1,100,000 $ 1,800,000 Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý $ 800,000 1,300,000 Ìý Ìý
Senior Notes - $400 Million [Member] | Maximum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 60 days Ìý Ìý Ìý
Senior Notes - $400 Million [Member] | Minimum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 30 days Ìý Ìý Ìý
Five Hundred Million Four Point Eight Zero Percent Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Repurchased Face Amount Ìý Ìý Ìý $ 43,800,000 $ 1,800,000 10,000,000 Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 500,000,000.0 500,000,000 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý 306,700,000 $ 490,000,000 Ìý Ìý
Senior Notes, Noncurrent Ìý Ìý Ìý Ìý $ 500,000,000 Ìý Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 4.80% 4.80% Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 4.83% 4.83% Ìý Ìý
Debt Repurchase Discount Ìý Ìý Ìý 54.30% 50.00% 40.25% Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý Ìý Ìý $ 4,000,000 Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý Ìý $ 137,800,000 Ìý Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 1,100,000 2,200,000 Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý 400,000 600,000 Ìý Ìý
$800 Million 6.25% 2040 Senior Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Repurchased Face Amount Ìý Ìý Ìý $ 45,900,000 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 800,000,000 Ìý Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 492,800,000 $ 800,000,000 Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 6.25% 6.25% Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 6.34% 6.34% Ìý Ìý
Debt Repurchase Discount Ìý Ìý Ìý 52.50% Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý Ìý $ 261,300,000 Ìý Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 4,300,000 $ 7,200,000 Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý 5,800,000 9,500,000 Ìý Ìý
Five Hundred Million Six Point Two Five Percent Two Thousand And Forty [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý $ 500,000,000 Ìý Ìý Ìý
Senior Notes10 Year Tranche [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Redemption Period, Time Period Prior to Maturity Date Ìý Ìý Ìý Ìý 3 months Ìý Ìý Ìý
Note Redemption Price if Redemption Period is During Specified Time Period, Percent of Principal Amount to be Redeemed Ìý Ìý Ìý Ìý 100.00% Ìý Ìý Ìý
Senior Notes, Noncurrent Ìý Ìý Ìý Ìý $ 700,000,000 Ìý Ìý Ìý
Seven Hundred Million Four Point Eight Seven Five Two Thousand Twenty-one Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Repurchased Face Amount Ìý Ìý Ìý $ 58,300,000 10,700,000 10,000,000 Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 700,000,000 700,000,000 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 412,500,000 $ 690,000,000 Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 4.875% 4.875% Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 4.89% 4.89% Ìý Ìý
Debt Repurchase Discount Ìý Ìý Ìý 52.00% 50.00% 40.50% Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý Ìý Ìý $ 4,100,000 Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý Ìý $ 208,500,000 Ìý Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 1,700,000 3,500,000 Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý 200,000 500,000 Ìý Ìý
Five hundred Forty-four Million Seven Point Seven Five Twenty Twenty Second Lien Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 544,200,000 0 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 544,200,000 Ìý Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 7.75% Ìý Ìý Ìý
Initial Redemption Price Ìý Ìý Ìý Ìý 1.03875 Ìý Ìý Ìý
Redemption Price beginning March 31, 2019 Ìý Ìý Ìý Ìý 1 Ìý Ìý Ìý
Redemption Price from time to time and Prior to March 31, 2017 Ìý Ìý Ìý Ìý 1 Ìý Ìý Ìý
Amount in aggregate that can be redeemed on or prior to March 31, 2017 Ìý Ìý Ìý Ìý 0.35 Ìý Ìý Ìý
Redemption Price of 35 percent or less of Outstanding Ìý Ìý Ìý Ìý 1.0775 Ìý Ìý Ìý
Amount to Remain Outstanding Prior to March 31, 2018 Ìý Ìý Ìý Ìý 0.65 Ìý Ìý Ìý
Discount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý Ìý 15,500,000 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $400M 5.90% Notes Ìý Ìý Ìý 57,500,000 Ìý Ìý Ìý Ìý
Discount Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý Ìý 55,000,000 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $800M 6.25% Notes Ìý Ìý Ìý 203,500,000 Ìý Ìý Ìý Ìý
Discount Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý Ìý 30,500,000 Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Received in Debt Exchange of $500M 4.80% Notes Ìý Ìý Ìý 112,900,000 Ìý Ìý Ìý Ìý
Discount Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý Ìý 46,000,000 Ìý Ìý Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 15.55% Ìý Ìý Ìý
Debt instrument, Face Amount Received in Debt Exchange of $700M 4.875% Notes Ìý Ìý Ìý 170,300,000 Ìý Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 9,500,000 Ìý Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý 147,000,000 131,500,000 Ìý Ìý Ìý
Revolving Credit Facility [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Sublimit for Issuance of Letters of Credit for Australian Tranche Ìý Ìý Ìý Ìý 50,000,000 Ìý Ìý Ìý
Sublimit for Australian Swingline Loans Ìý Ìý Ìý Ìý $ 20,000,000 Ìý Ìý Ìý
LIBOR Rate Based on a One-month interest period plus 1 percent Ìý Ìý Ìý Ìý 0.01 Ìý Ìý Ìý
Fixed Charge Coverage Ratio Ìý Ìý Ìý Ìý 1.0 Ìý Ìý Ìý
Repayments of Debt $ 350,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Revolving credit facility, borrowing capacity Ìý Ìý Ìý Ìý $ 366,000,000 Ìý Ìý Ìý
Credit facility, amount outstanding Ìý Ìý Ìý Ìý 0 [1] 0 [2] Ìý Ìý
Credit facility remaining capacity Ìý Ìý Ìý Ìý 179,200,000 975,500,000 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý 550,000,000 $ 1,125,000,000 Ìý Ìý
U.S. Tranche Ìý Ìý Ìý Ìý 450,000,000 Ìý Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý Ìý 2.94% Ìý Ìý
Sublimit for Issuers of Letters of Credit for U.S. Tranche Ìý Ìý Ìý Ìý 250,000,000 Ìý Ìý Ìý
Sublimit for U.S. Swingline Loans Ìý Ìý Ìý Ìý 100,000,000 Ìý Ìý Ìý
Australian Tranche Ìý Ìý Ìý Ìý $ 100,000,000 Ìý Ìý Ìý
Revolving Credit Facility [Member] | Maximum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Base Rate Ìý Ìý Ìý Ìý 0.01 Ìý Ìý Ìý
Revolving Credit Facility [Member] | Minimum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Base Rate Ìý Ìý Ìý Ìý 0.005 Ìý Ìý Ìý
Senior Notes Five Hundred Million [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Note Redemption Price, Percent of Principal Amount to be Redeemed Ìý Ìý Ìý Ìý 100.00% Ìý Ìý Ìý
Redemption Price, Percent Of Principal In The Event Of Change Of Control Ìý Ìý Ìý Ìý 101.00% Ìý Ìý Ìý
Limit on Increase in Interest Rate Above Initial Interest Rate, Based on Rating Events Ìý Ìý Ìý Ìý 2.00% Ìý Ìý Ìý
Senior Notes Five Hundred Million [Member] | Maximum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 60 days Ìý Ìý Ìý
Senior Notes Five Hundred Million [Member] | Minimum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 30 days Ìý Ìý Ìý
Five Hundred Million Three Point Nine Five Two Thousand Eighteen Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Repurchased Face Amount Ìý Ìý Ìý $ 44,000,000 $ 20,000,000 Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 500,000,000 $ 500,000,000.0 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 311,200,000 $ 480,000,000 Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 3.95% 3.95% Ìý Ìý
Cash Used to Repurchase Debt Ìý Ìý Ìý Ìý $ 68,600,000 Ìý Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 6.30% 5.17% Ìý Ìý
Debt Repurchase Discount Ìý Ìý Ìý 77.50% Ìý 30.875% Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý Ìý Ìý $ 6,200,000 Ìý Ìý
Debt Instrument, Face Amount Exchanged Ìý Ìý Ìý Ìý $ 124,800,000 Ìý Ìý Ìý
Interest Rate Due to Rating Downgrades Ìý Ìý Ìý Ìý 5.95% 5.70% Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 900,000 $ 2,100,000 Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý 1,200,000 2,600,000 Ìý Ìý
Five hundred forty million Eight point two five Twenty twenty First Lien Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 540,000,000 $ 0 Ìý Ìý
Debt Instrument, Par Value Ìý Ìý Ìý Ìý $ 540,000,000 Ìý Ìý Ìý
Stated interest rate Ìý Ìý Ìý Ìý 8.25% Ìý Ìý Ìý
Repurchase Price of $540M 8.25% Notes if Triggering Event Occurs Ìý Ìý Ìý Ìý 1.01 Ìý Ìý Ìý
Initial Redemption Price Ìý Ìý Ìý Ìý 1.0825 Ìý Ìý Ìý
Redemption Price after 2018 Ìý Ìý Ìý Ìý 1 Ìý Ìý Ìý
Redemption Price from time to time and Prior to March 31, 2018 Ìý Ìý Ìý Ìý 1 Ìý Ìý Ìý
Amount in aggregate that can be redeemed on or prior to March 31, 2018 Ìý Ìý Ìý Ìý 0.35 Ìý Ìý Ìý
Redemption Price of 35 percent or less of Outstanding Ìý Ìý Ìý Ìý 1.0825 Ìý Ìý Ìý
Amount to Remain Outstanding Prior to March 31, 2018 Ìý Ìý Ìý Ìý 0.65 Ìý Ìý Ìý
In the Event of Default Amount that will Accelerate Ìý Ìý Ìý Ìý 0.25 Ìý Ìý Ìý
Imputed interest rate Ìý Ìý Ìý Ìý 9.97% Ìý Ìý Ìý
Unamortized Debt Issuance Expense Ìý Ìý Ìý Ìý $ 10,500,000 Ìý Ìý Ìý
Debt Instrument, Unamortized Discount Ìý Ìý Ìý Ìý 32,100,000.0 Ìý Ìý Ìý
Senior Notes30 Year Tranche [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý 300,000,000 Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Eleven Offering [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý $ 1,000,000,000 Ìý Ìý Ìý
Note Redemption Price, Percent of Principal Amount to be Redeemed Ìý Ìý Ìý Ìý 100.00% Ìý Ìý Ìý
Redemption Price, Percent Of Principal In The Event Of Change Of Control Ìý Ìý Ìý Ìý 101.00% Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Eleven Offering [Member] | Maximum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 60 days Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Eleven Offering [Member] | Minimum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 30 days Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Ten Offering [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Debt Instrument, Face Amount Ìý Ìý Ìý Ìý $ 1,000,000,000 Ìý Ìý Ìý
Note Redemption Price, Percent of Principal Amount to be Redeemed Ìý Ìý Ìý Ìý 100.00% Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Ten Offering [Member] | Maximum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 60 days Ìý Ìý Ìý
Senior Notes One Billion Two Thousand Ten Offering [Member] | Minimum [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Time Period During Which Senior Notes May Be Redeemed at Company's Option, Number of Days From When Prior Notice Sent to Holders Ìý Ìý Ìý Ìý 30 days Ìý Ìý Ìý
Debt Repurchase [Member] | Senior Notes - $400 Million [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý $ 18,000,000 $ 300,000 Ìý Ìý Ìý Ìý
Debt Repurchase [Member] | Five Hundred Million Four Point Eight Zero Percent Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 15,600,000 $ 900,000 Ìý Ìý Ìý
Debt Repurchase [Member] | $800 Million 6.25% 2040 Senior Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 15,000,000 Ìý Ìý Ìý Ìý
Debt Repurchase [Member] | Seven Hundred Million Four Point Eight Seven Five Two Thousand Twenty-one Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 20,000,000 $ 5,300,000 Ìý Ìý Ìý
Debt Repurchase [Member] | Five Hundred Million Three Point Nine Five Two Thousand Eighteen Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 7,100,000 Ìý Ìý Ìý Ìý
Exchange of Debt [Member] | Senior Notes - $400 Million [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 24,500,000 Ìý Ìý Ìý Ìý
Exchange of Debt [Member] | Five Hundred Million Four Point Eight Zero Percent Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 54,600,000 Ìý Ìý Ìý Ìý
Exchange of Debt [Member] | $800 Million 6.25% 2040 Senior Notes [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý 107,300,000 Ìý Ìý Ìý Ìý
Exchange of Debt [Member] | Seven Hundred Million Four Point Eight Seven Five Two Thousand Twenty-one Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý Ìý $ 83,100,000 Ìý Ìý Ìý Ìý
Exchange of Debt [Member] | Five Hundred Million Three Point Nine Five Two Thousand Eighteen Senior Note [Member] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Line of Credit Facility [Line Items] Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Gain on extinguishment of debt Ìý Ìý $ 54,900,000 Ìý Ìý Ìý Ìý Ìý
[1] As of DecemberÌý31, 2015, no loans were drawn under the $550.0 million ABL Facility and we had total availability of $366.0 million as a result of borrowing base limitations. As of DecemberÌý31, 2015, the principal amount of letter of credit obligations totaled $186.3 million and commodity hedge obligations totaled $0.5 million, thereby further reducing available borrowing capacity on our ABL Facility to $179.2 million.
[2] As of DecemberÌý31, 2014, we had no revolving loans drawn under the revolving credit agreement, which had total availability of $1.125 billion as of December 31, 2014. As of December 31, 2014, the principal amount of letter of credit obligations totaled $149.5 million, thereby reducing available borrowing capacity to $975.5 million.