Components of Equity (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 2,032,570	$ 2,010,069
Exercise of stock options			18,477	20,402
Shares repurchased under provisions of stock repurchase plans			(39,281)	(106,266)
Stock compensation expense			22,045	21,526
Tax benefits from stock plans, net			1,516	4,232
Net earnings	92,663	84,021	173,273	160,743
Other comprehensive (loss) income	(11,013)	(11,453)	(21,026)	(1,291)
Dividends paid			(61,899)	(59,358)
Purchase of noncontrolling interest			(3,733)
Ending Balance	2,121,942	2,050,057	2,121,942	2,050,057
Shareholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			2,027,699	2,003,638
Exercise of stock options			18,477	20,402
Shares repurchased under provisions of stock repurchase plans			(39,281)	(106,266)
Stock compensation expense			22,045	21,526
Tax benefits from stock plans, net			1,516	4,232
Net earnings			172,630	160,662
Other comprehensive (loss) income			(20,839)	(1,381)
Dividends paid			(61,899)	(59,358)
Purchase of noncontrolling interest			(507)
Ending Balance	2,119,841	2,043,455	2,119,841	2,043,455
Noncontrolling Interest
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			4,871	6,431
Net earnings			643	81
Other comprehensive (loss) income			(187)	90
Purchase of noncontrolling interest			(3,226)
Ending Balance	$ 2,101	$ 6,602	$ 2,101	$ 6,602