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CAPITAL STOCK (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Feb. 09, 2017 | Dec. 31, 2016
Class of Stock [Line Items] |  |  |  |
Common Stock, Shares, Issued | 63,250 |  |  |
Net proceeds from issuance of common shares | $ 661.3 | $ 0.0 |  |
Shares Issued, Price Per Share |  |  | $ 10.75 |
Extinguishment of Debt, Amount | 1,106.4 |  |  |
$500 Million 5.75% 2025 Senior Notes [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Debt Instrument, Par Value | 500.0 |  |  |
Secured Debt [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Extinguishment of Debt, Amount | 648.6 |  |  |
Unsecured Debt [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Extinguishment of Debt, Amount | 422.2 |  |  |
$540 Million 8.25% 2020 Lien Notes [Member] |  |  |  |
Class of Stock [Line Items] |  |  |  |
Debt Instrument, Par Value | 504.4 |  |  | $ 540.0
Extinguishment of Debt, Amount | $ 35.6 |  |  |

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