Segment Information - Schedule of Revenue from External Customers and Identifiable Assets, by Geographical Areas (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net Revenue	$ 633,940	$ 566,211	$ 566,896	$ 533,400	$ 612,690	$ 480,354	$ 490,405	$ 401,903	$ 2,300,447	$ 1,985,352	$ 1,912,448
Operating Income (Loss)	199,593	113,712	98,980	107,180	73,154	81,118	40,938	21,597	519,465	216,807	123,885
Identifiable Assets	3,332,236				3,011,137				3,332,236	3,011,137	2,986,893
United States [Member]
Segment Reporting Information [Line Items]
Net Revenue									1,308,220	1,217,014	1,172,566
Operating Income (Loss)									320,082	234,247	169,111
Identifiable Assets	1,840,882				1,529,695				1,840,882	1,529,695	1,507,331
United Kingdom [Member]
Segment Reporting Information [Line Items]
Net Revenue									277,610	205,695	180,784
Operating Income (Loss)									61,744	(6,474)	(37,329)
Identifiable Assets	266,584				239,606				266,584	239,606	226,578
France [Member]
Segment Reporting Information [Line Items]
Net Revenue									376,432	281,740	265,523
Operating Income (Loss)									87,308	14,845	8,332
Identifiable Assets	809,241				824,712				809,241	824,712	808,655
Other Western Europe [Member]
Segment Reporting Information [Line Items]
Net Revenue									150,810	123,975	132,754
Operating Income (Loss)									12,634	(8,260)	(20,812)
Identifiable Assets	135,889				118,939				135,889	118,939	114,763
Rest of World [Member]
Segment Reporting Information [Line Items]
Net Revenue									187,375	156,928	160,821
Operating Income (Loss)									37,697	(17,551)	4,583
Identifiable Assets	$ 279,640				$ 298,185				$ 279,640	$ 298,185	$ 329,566