Financial Information by Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 2,422,167	$ 2,305,858	$ 4,813,363	$ 4,562,239
Operating earnings (loss)	47,860	37,101	88,835	83,387
Acquisition-related and exit and realignment charges	(5,707)	(7,593)	(15,623)	(10,855)
Depreciation and amortization	15,781	13,892	31,950	27,756
Capital expenditures	11,259	24,595	22,825	38,823
Accelerated Amortization
Segment Reporting, Revenue Reconciling Item [Line Items]
Acquisition-related and exit and realignment charges	(1,200)		(4,200)
Operating Segments | Domestic
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,317,661	2,187,535	4,603,296	4,336,451
Operating earnings (loss)	52,390	48,317	102,901	101,053
Depreciation and amortization	10,504	8,812	21,242	17,787
Capital expenditures	3,384	18,858	12,035	29,033
Operating Segments | International
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	104,506	118,323	210,067	225,788
Operating earnings (loss)	1,177	(3,623)	1,557	(6,811)
Depreciation and amortization	5,277	5,080	10,708	9,969
Capital expenditures	7,875	5,737	10,790	9,790
Segment Reconciling Items
Segment Reporting, Revenue Reconciling Item [Line Items]
Acquisition-related and exit and realignment charges	$ (5,707)	$ (7,593)	$ (15,623)	$ (10,855)