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

X
- Definition Amount in aggregate that can be redeemed on or prior to March 31, 2017 + References No definition available. + Details
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- Definition Amount in aggregate that can be redeemed on or prior to March 31, 2018 + References No definition available. + Details
Name: | clf_AmountinaggregatethatcanberedeemedonorpriortoMarch312018
Namespace Prefix: | clf_
Data Type: | xbrli:pureItemType
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Period Type: | duration

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- Definition Amount to Remain Outstanding Prior to March 31, 2018 + References No definition available. + Details
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- Definition Cash Used to Repurchase Debt + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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- Definition The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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Data Type: | na
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