Financial Information by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	$ 8,908,145	$ 8,627,912	$ 8,123,608
Long-lived assets	293,887	159,939	153,637
United States
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	8,731,484	8,627,912	8,123,608
Long-lived assets	162,333	159,939	153,637
UNITED KINGDOM
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	86,332
Long-lived assets	40,609
FRANCE
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	54,159
Long-lived assets	7,960
GERMANY
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	13,670
Long-lived assets	54,826
Other Europe
Segment and Geographic Distribution of Operations [Line Items]
Net revenue	22,500
Other European Countries and China
Segment and Geographic Distribution of Operations [Line Items]
Long-lived assets	$ 28,159