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CAPITAL STOCK (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Mar. 31, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | Feb. 09, 2017
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  |  | 63,250 |  |
Net proceeds from issuance of common shares |  |  | $ 661.3 | $ 287.6 |
Shares Issued, Price Per Share |  |  |  |  | $ 10.75
Extinguishment of Debt, Amount |  |  | 1,610.7 |  |
$1,075 Million 5.75% 2025 Senior Notes [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Proceeds from Issuance of Debt | $ 575.0 | $ 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] |  |  |  |  |
Extinguishment of Debt, Amount |  | $ 35.6 | $ 540.0 |  |

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