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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2018 | Oct. 09, 2018 | Apr. 28, 2018 | Mar. 26, 2018 | Mar. 21, 2018
6.875% Senior Notes due 2018 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  |  |  |  | 6.875%
7.25% Senior Notes due 2027 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  |  |  |  | 7.25%
14.0% Senior Notes Due 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate | 14.00% |  | 14.00% | 14.00% |
Ministry of Economic Affairs and Finance, Italy |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Estimated loss from Italy investigation | $ 17 |  |  |  |
Subsequent Event | 6.875% Senior Notes due 2018 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  | 6.875% |  |  |
Subsequent Event | 7.25% Senior Notes due 2027 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Stated interest rate |  | 7.25% |  |  |

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