Guarantor Subsidiaries Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Condensed Financial Statements Captions [Line Items]
Cash and cash equivalents	$ 225,338	$ 215,766	$ 269,304	$ 285,615
Accounts receivable	432,797	389,915
Inventories	428,584	407,039
Other current assets	82,267	80,218
Total current assets	1,168,986	1,092,938
Property, plant and equipment	242,716	244,088
Goodwill	728,021	666,022
Other intangibles, net	325,297	308,321
Other long term assets	41,155	40,173
Total Assets	2,506,175	2,351,542
Current liabilities	560,981	553,059
Long-term debt	417,527	317,853
Other long term liabilities	196,399	198,613
Total liabilities	1,174,907	1,069,525
Stockholders’ equity	1,331,268	1,282,017
Total Liabilities and Shareholders’ Equity	2,506,175	2,351,542
Parent Company
Condensed Financial Statements Captions [Line Items]
Cash and cash equivalents	52,096	22,335	61,714	75,621
Accounts receivable	426	1,210
Other current assets	63,797	63,496
Total current assets	116,319	87,041
Property, plant and equipment	4,880	4,685
Goodwill	7,980	7,980
Investment in subsidiaries	3,319,453	3,146,931
Other long term assets	(10,924)	(10,491)
Total Assets	3,437,708	3,236,146
Current liabilities	53,235	64,404
Inter-company	1,568,271	1,506,541
Long-term debt	417,000	317,000
Other long term liabilities	67,934	66,184
Total liabilities	2,106,440	1,954,129
Stockholders’ equity	1,331,268	1,282,017
Total Liabilities and Shareholders’ Equity	3,437,708	3,236,146
Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Cash and cash equivalents	3,027	5,473	6,144	14,024
Accounts receivable	242,042	213,895
Inventories	289,157	278,610
Other current assets	5,907	5,400
Total current assets	540,133	503,378
Property, plant and equipment	125,070	127,165
Goodwill	403,993	402,510
Investment in subsidiaries	377,774	279,731
Other intangibles, net	167,380	169,374
Other long term assets	5,915	4,309
Total Assets	1,620,265	1,486,467
Current liabilities	333,294	321,675
Inter-company	(1,647,284)	(1,598,419)
Long-term debt	159	168
Other long term liabilities	37,335	37,845
Total liabilities	(1,276,496)	(1,238,731)
Stockholders’ equity	2,896,761	2,725,198
Total Liabilities and Shareholders’ Equity	1,620,265	1,486,467
Non-Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Cash and cash equivalents	170,215	187,958	201,446	195,970
Accounts receivable	190,329	174,810
Inventories	139,427	128,429
Other current assets	12,563	11,322
Total current assets	512,534	502,519
Property, plant and equipment	112,766	112,238
Goodwill	316,048	255,532
Other intangibles, net	157,917	138,947
Other long term assets	46,164	46,355
Total Assets	1,145,429	1,055,591
Current liabilities	174,452	166,980
Inter-company	79,013	91,878
Long-term debt	368	685
Other long term liabilities	91,130	94,584
Total liabilities	344,963	354,127
Stockholders’ equity	800,466	701,464
Total Liabilities and Shareholders’ Equity	1,145,429	1,055,591
Elimination
Condensed Financial Statements Captions [Line Items]
Investment in subsidiaries	(3,697,227)	(3,426,662)
Total Assets	(3,697,227)	(3,426,662)
Stockholders’ equity	(3,697,227)	(3,426,662)
Total Liabilities and Shareholders’ Equity	$ (3,697,227)	$ (3,426,662)