Fair Value Measurements - Carrying Amounts, Estimated Fair Values and Valuation Input Levels of the Company's Available-for-Sale Securities, Foreign Currency Contracts and Debt Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
6.00% Senior Notes Due June 2025 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	$ 1,500,000
5.50% Senior Notes Due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	650,000	$ 650,000
5.00% Senior Notes Due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	650,000	650,000
Senior PIK Toggle Notes Due 2020 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior PIK toggle notes due 2020	536,630	550,000
Senior Secured Term Loans Due 2018, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt	261,875	518,438
Senior Secured Term Loans Due 2017, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt		345,625
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	11,683	20,392
Carrying Amount [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contracts	1,051	1,165
Carrying Amount [Member] | Other Accrued Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contracts	5,945	3,584
Carrying Amount [Member] | 6.00% Senior Notes Due June 2025 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	1,500,000
Carrying Amount [Member] | 5.50% Senior Notes Due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	650,000	650,000
Carrying Amount [Member] | 5.00% Senior Notes Due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	650,000	650,000
Carrying Amount [Member] | Senior PIK Toggle Notes Due 2020 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior PIK toggle notes due 2020	536,630	550,000
Carrying Amount [Member] | 4.375% Senior Secured Notes Due 2020 [ Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt	500,000
Carrying Amount [Member] | Senior Secured Term Loan Due June Two Thousand Twenty Two [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt	1,246,875
Carrying Amount [Member] | Senior Secured Term Loans Due 2018, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt	261,875	518,438
Carrying Amount [Member] | Senior Secured Term Loans Due 2017, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured debt		345,625
Fair Value [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale securities	11,683	20,392
Fair Value [Member] | Level 2 [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contracts	1,051	1,165
Fair Value [Member] | Level 2 [Member] | Other Accrued Liabilities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Foreign currency contracts	5,945	3,584
Fair Value [Member] | Level 2 [Member] | 6.00% Senior Notes Due June 2025 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	1,430,700
Fair Value [Member] | Level 2 [Member] | 5.50% Senior Notes Due 2024 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	617,500	640,250
Fair Value [Member] | Level 2 [Member] | 5.00% Senior Notes Due 2021 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	619,125	643,500
Fair Value [Member] | Level 2 [Member] | Senior PIK Toggle Notes Due 2020 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior PIK toggle notes due 2020	544,679	566,500
Fair Value [Member] | Level 2 [Member] | 4.375% Senior Secured Notes Due 2020 [ Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior notes	500,000
Fair Value [Member] | Level 2 [Member] | Senior Secured Term Loan Due June Two Thousand Twenty Two [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured term loans	1,243,727
Fair Value [Member] | Level 2 [Member] | Senior Secured Term Loans Due 2018, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured term loans	$ 260,068	513,254
Fair Value [Member] | Level 2 [Member] | Senior Secured Term Loans Due 2017, at Par [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior secured term loans		$ 342,169