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Condensed Guarantor and Non-Guarantor Financial Information, Narrative (Details) - USD ($) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2017 | May 15, 2016 | May 23, 2012
Condensed Financial Statements, Captions |  |  |  |
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries | $ 0 |  |  |
Ownership interest by parent |  | 100.00% |  |
Senior Notes Due 2020 | Senior Notes |  |  |  |
Condensed Financial Statements, Captions |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 225,000,000
Debt instrument contractual rate (percent) |  |  |  | 8.25%
Senior Notes Due 2024 | Senior Notes |  |  |  |
Condensed Financial Statements, Captions |  |  |  |
Debt Instrument, Face Amount |  |  | $ 375,000,000 |
Debt instrument contractual rate (percent) |  |  | 5.875% |
Guarantor Subsidiaries |  |  |  |
Condensed Financial Statements, Captions |  |  |  |
Cash Dividends Paid to Parent Company by Consolidated Subsidiaries | $ (200,000,000) |  |  |

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