Condensed Consolidating Financial Information - Narrative (Details) - USD ($) |
Dec. 31, 2016 |
Dec. 21, 2016 |
Oct. 31, 2016 |
Oct. 14, 2016 |
Dec. 31, 2015 |
Apr. 21, 2015 |
Aug. 18, 2014 |
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|---|---|---|---|---|---|---|---|---|---|
| Guarantors | |||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||
| Other ownership interest, percentage | 100.00% | ||||||||
| Senior notes | 7.75% Senior notes 2020 | |||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||
| Aggregate principal amount | [1] | $ 600,000,000.0 | |||||||
| Stated interest rate | 7.75% | 7.75% | 7.75% | ||||||
| Repurchased face amount | $ 600,000,000.0 | $ 196,500,000 | |||||||
| Senior notes | 6.625% Senior notes 2023 | |||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||
| Aggregate principal amount | $ 350,000,000.0 | ||||||||
| Stated interest rate | 6.625% | 6.625% | 6.625% | ||||||
| Senior notes | 6.000% Senior notes 2024 | |||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||
| Aggregate principal amount | $ 650,000,000.0 | ||||||||
| Stated interest rate | 6.00% | 6.00% | 6.00% | ||||||
| Senior notes | 6.375% Senior Notes 2025 | |||||||||
| Condensed Financial Statements, Captions [Line Items] | |||||||||
| Aggregate principal amount | $ 600,000,000 | ||||||||
| Stated interest rate | 6.375% | 6.375% | 6.375% | ||||||
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