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Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Parenthetical) (Detail) - USD ($) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Debt Instrument [Line Items] |  |
Debt issuance costs | $ 248,800,000 |
Senior Notes Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 250,000,000 |
Interest rate | 10.25% |
Debt maturity date | Nov. 01, 2020 |
Debt issuance costs | $ 5,400,000 | $ 5,900,000
Senior Secured Term Loan B [Member] |  |
Debt Instrument [Line Items] |  |
Borrowings | $ 575,000,000 |
Interest rate | 0.65% |
Applicable margin | 4.75% |
Debt issuance costs | $ 19,500,000 | 20,600,000
LIBOR Period | 3 months |
Debt maturity date | Oct. 19, 2022 |
Senior Secured Term Loan B [Member] | Minimum [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 1.00% |
Senior Secured Revolving Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt issuance costs | $ 2,600,000 | $ 2,900,000
Borrowings | $ 100,000,000 |
Debt maturity date | Oct. 19, 2020 |
Senior Secured Revolving Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate | 0.44% |
Applicable margin | 3.50% |

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