Financial Information by Segment (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	$ 2,386,126	$ 2,270,547	$ 6,948,365	$ 6,753,008
Operating earnings (loss):	35,377	49,215	118,763	147,150
Acquisition-related and exit and realignment charges	(13,957)	(2,747)	(24,813)	(5,395)
Depreciation and amortization	13,841	12,441	41,597	37,347
Capital expenditures	15,334	14,458	54,157	45,505
Domestic
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	2,262,081	2,175,663	6,598,531	6,474,069
Operating earnings (loss):	50,797	51,213	151,849	155,364
Depreciation and amortization	8,986	8,805	26,772	26,775
Capital expenditures	11,077	10,032	40,110	34,506
International
Segment Reporting, Revenue Reconciling Item [Line Items]
Net revenue	124,045	94,884	349,834	278,939
Operating earnings (loss):	(1,463)	749	(8,273)	(2,819)
Depreciation and amortization	4,855	3,636	14,825	10,572
Capital expenditures	$ 4,257	$ 4,426	$ 14,047	$ 10,999