Long-Term Debt - Additional Information (Detail)				3 Months Ended		6 Months Ended
	Dec. 23, 2013 USD ($)	Dec. 06, 2013 USD ($)	May. 13, 2011 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Line of Credit Facility [Line Items]
Senior Notes issued			$ 610,000,000.0
Amount repaid under outstanding term loan facility			$ 575,800,000
Agreement maturity date						May 01, 2019
Percentage of Senior Notes to be redeemed prior to May 1, 2015			100.00%
Amortization of debt issuance costs/discounts				$ 2,400,000	$ 2,300,000	$ 4,712,000	$ 4,654,000
7.75% senior notes
Line of Credit Facility [Line Items]
Interest on borrowings, per annum			7.75%	7.75%		7.75%		7.75%
Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Term loan	$ 2,025,000,000.000
Basis spread on LIBOR/base rate	1.00%
Floor rate	2.00%
Amortization rate per annum	1.00%
Interest rate per annum				4.25%		4.25%
Percentage ownership of capital stock of any future first-tier foreign subsidiaries	66.00%
Amount outstanding				$ 1,904,000,000		$ 1,904,000,000		$ 1,904,000,000
Securitization facility | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Term loan	$ 200,000,000.0
Amount outstanding				0		0		0
Letter of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Term loan	$ 30,000,000.0
Accounts Receivable Securitization Facility | Securitization Facility
Line of Credit Facility [Line Items]
Term loan		$ 50,000,000.0
Amount outstanding				$ 0		$ 0		$ 0
Term of revolving accounts receivable securitization facility		5 years
LIBOR | Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on LIBOR/base rate	3.25%
Floor rate	1.00%
LIBOR | Accounts Receivable Securitization Facility | Securitization Facility
Line of Credit Facility [Line Items]
Basis spread on LIBOR/base rate		2.50%
Base Rate | Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on LIBOR/base rate	2.25%
Federal Funds Rate | Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Basis spread on LIBOR/base rate	0.50%
Index Rate | Accounts Receivable Securitization Facility | Securitization Facility
Line of Credit Facility [Line Items]
Basis spread on LIBOR/base rate		1.00%
Maximum | Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Consolidated net leverage ratio				5.50		5.50
Minimum | Line of Credit | Amended and Restated Credit Agreement
Line of Credit Facility [Line Items]
Consolidated net leverage ratio				4.0		4.0