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DEBT AND CREDIT FACILITIES (Narrative) (Details) shares in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) shares | Sep. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) shares | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 16, 2016 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  |  |  | $ (166,300,000) | $ (392,900,000) | $ (16,200,000) |
Payments of Debt Issuance Costs |  |  |  |  | 5,200,000 | 33,600,000 | $ 9,000,000 |
Long-term Debt, Current Maturities | $ 17,500,000 |  |  |  | $ 17,500,000 |  |  |
Common Shares Issued in Debt to Equity Exchange | shares | 8.2 |  |  |  | 8.2 |  |  |
Debt Instrument, Face Amount Exchanged |  |  | $ 512,200,000 | $ 674,600,000 |  |  |  |
$540 Million 8.25% 2020 First Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.25% |  |  |  | 8.25% |  |  |
Debt Instrument, Par Value | $ 540,000,000 |  |  |  | $ 540,000,000 | 540,000,000 |  |
$218.5 Million 8.00% 2020 1.5 Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% |  |  |  | 8.00% |  |  |
Debt Instrument, Par Value | $ 218,500,000 |  | 218,500,000 |  | $ 218,500,000 |  |  |
$544.2 Million 7.75% 2020 Second Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.75% |  |  |  | 7.75% |  |  |
Debt Instrument, Par Value | $ 430,100,000 |  |  | 544,200,000 | $ 430,100,000 | 544,200,000 |  |
Debt Instrument, Face Amount Exchanged |  |  | 114,100,000 |  |  |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Repurchase price if triggering event occurs |  |  |  |  | 1.01 |  |  |
In the Event of Default Amount that will Accelerate |  |  |  |  | 0.25 |  |  |
$500 Million 3.95% 2018 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.95% |  |  |  | 3.95% |  |  |
Debt Instrument, Par Value |  |  |  |  |  | 311,200,000 |  |
Gain on extinguishment/restructuring of debt |  | $ 19,900,000 |  |  |  |  |  |
Amortization of Debt Discount (Premium) |  | 17,400,000 |  |  |  |  |  |
Debt Redemption Expenses |  | 2,500,000 |  |  |  |  |  |
Basis points | 50 |  |  |  | 50 |  |  |
Debt Instrument, Face Amount Exchanged |  |  | 17,600,000 |  |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  | 168,800,000 |  |
$400 Million 5.90% 2020 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.90% |  |  |  | 5.90% |  |  |
Debt Instrument, Par Value | $ 225,600,000 |  |  |  | $ 225,600,000 | 290,800,000 |  |
Basis points | 35 |  |  |  | 35 |  |  |
Debt Instrument, Face Amount Exchanged |  |  | 65,100,000 | 67,000,000 |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  | 37,300,000 |  |
$500 Million 4.80% 2020 Senior Notes[Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.80% |  |  |  | 4.80% |  |  |
Debt Instrument, Par Value | $ 236,800,000 |  |  |  | $ 236,800,000 | 306,700,000 |  |
Gain on extinguishment/restructuring of debt | (600,000) |  |  |  |  |  |  |
Debt Instrument, Face Amount Exchanged |  |  | 44,700,000 | 137,800,000 |  |  |  |
Debt Instrument, Repurchased Face Amount | $ 5,000,000 |  |  |  | $ 5,000,000 | 45,600,000 |  |
$700 Million 4.875% 2021 Senior Notes[Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.875% |  |  |  | 4.875% |  |  |
Debt Instrument, Par Value | $ 309,400,000 |  |  |  | $ 309,400,000 | 412,500,000 |  |
Basis points | 25 |  |  |  | 25 |  |  |
Debt Instrument, Face Amount Exchanged |  |  | 76,300,000 | 208,500,000 |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  | 69,000,000 |  |
$800 Million 6.25% 2040 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.25% |  |  |  | 6.25% |  |  |
Debt Instrument, Par Value | $ 298,400,000 |  |  |  | $ 298,400,000 | 492,800,000 |  |
Basis points | 40 |  |  |  | 40 |  |  |
Debt Instrument, Face Amount Exchanged |  |  | 194,400,000 | 261,300,000 |  |  |  |
Debt Instrument, Repurchased Face Amount |  |  |  |  |  | 45,900,000 |  |
Unsecured Debt [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Repurchase price if triggering event occurs |  |  |  |  | 1.01 |  |  |
Note Redemption Price, Percent of Principal Amount to be Redeemed | 100.00% |  |  |  | 100.00% |  |  |
Unsecured Debt [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 |  |  |
Unsecured Debt [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 |  |  |
ABL Facility [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Par Value | $ 550,000,000 |  |  |  | $ 550,000,000 |  |  |
U.S. Tranche | 450,000,000 |  |  |  | 450,000,000 |  |  |
Sublimit for Issuers of Letters of Credit for U.S. Tranche | 250,000,000 |  |  |  | 250,000,000 |  |  |
Sublimit for U.S. Swingline Loans | 100,000,000 |  |  |  | 100,000,000 |  |  |
Australian Tranche | 100,000,000 |  |  |  | 100,000,000 |  |  |
Sublimit for Issuance of Letters of Credit for Australian Tranche | 50,000,000 |  |  |  | 50,000,000 |  |  |
Sublimit for Australian Swingline Loans | 20,000,000 |  |  |  | $ 20,000,000 |  |  |
LIBOR Rate Based on a One-month interest period plus 1 percent |  |  |  |  | 0.01 |  |  |
Fixed Charge Coverage Ratio |  |  |  |  | 1.0 |  |  |
Credit facility, amount outstanding | 0 |  |  |  | $ 0 | 0 |  |
Line of Credit Facility, Remaining Borrowing Capacity | 227,000,000 |  |  |  | 227,000,000 | 179,200,000 |  |
Revolving credit facility, borrowing capacity | 333,000,000 |  |  |  | $ 333,000,000 | 366,000,000 |  |
ABL Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Base Rate |  |  |  |  | 0.01 |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Credit facility, amount outstanding | 106,000,000 |  |  |  | $ 106,000,000 | 186,300,000 |  |
Hedge Obligations [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Credit facility, amount outstanding |  |  |  |  |  | 500,000 |  |
Debt Repurchase [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  |  |  |  | (137,100,000) |  |
Debt Repurchase [Member] | $500 Million 3.95% 2018 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Redemption Price |  |  |  |  |  |  |  | $ 301,000,000
Debt Instrument, Par Value |  | $ 283,600,000 |  |  |  |  |  |
Exchange of Debt [Member] | $218.5 Million 8.00% 2020 1.5 Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  |  |  | (174,300,000) |  |  |
Exchange of Debt [Member] | $544.2 Million 7.75% 2020 Second Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | (6,900,000) |  |  | (269,500,000) |  |
Exchange of Debt [Member] | $500 Million 3.95% 2018 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | (1,800,000) |  |  |  |  |
Exchange of Debt [Member] | $400 Million 5.90% 2020 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | (28,300,000) | (24,500,000) |  |  |  |
Exchange of Debt [Member] | $500 Million 4.80% 2020 Senior Notes[Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | (19,500,000) | (54,600,000) |  |  |  |
Exchange of Debt [Member] | $700 Million 4.875% 2021 Senior Notes[Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | (33,300,000) | (83,100,000) |  |  |  |
Exchange of Debt [Member] | $800 Million 6.25% 2040 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  | $ (84,500,000) | $ (107,300,000) |  |  |  |
Exchange of Debt for Equity [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt | (11,300,000) |  |  |  |  |  |  |
Exchange of Debt for Equity [Member] | $218.5 Million 8.00% 2020 1.5 Lien Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount Exchanged | 20,100,000 |  |  |  | 20,100,000 |  |  |
Exchange of Debt for Equity [Member] | $500 Million 3.95% 2018 Senior Notes [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount Exchanged | 10,000,000 |  |  |  | 10,000,000 |  |  |
Exchange of Debt for Equity [Member] | $700 Million 4.875% 2021 Senior Notes[Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount Exchanged | $ 26,800,000 |  |  |  | $ 26,800,000 |  |  |
Credit Facility Extinguishment [Member] |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |
Gain on extinguishment/restructuring of debt |  |  |  |  |  | $ (13,700,000) |  |

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: 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=66902209&loc=d3e3602-108585 Reference 2: 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=64930785&loc=d3e28541-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + 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=66902209&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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -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 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 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 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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