CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net income	$ 156,649	$ 146,469
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of fixed assets		(2,831)
Depreciation and amortization	27,204	27,670
Amortization of intangible assets	30,734	25,446
Amortization of debt issuance expenses	1,109	947
Share-based compensation expense	11,162	9,755
Deferred income taxes	4,621	1,623
Excess tax benefit from share based compensation	(3,295)	(4,920)
Non-cash interest expense associated with forward starting swaps	5,743	2,687
Changes in:
Receivables	(8,199)	(18,721)
Inventories	9,187	(13,026)
Trade accounts payable	(2,797)	(1,355)
Accrued expenses	15,929	12,688
Other - net	(7,549)	(10,823)
Net cash flows provided by operating activities	240,498	175,609
Cash flows from investing activities
Cash purchases of property, plant and equipment	(28,108)	(27,984)
Proceeds from disposal of fixed assets		12,651
Acquisition of businesses, net of cash acquired	(69,021)	(446,069)
Other - net	(365)	(2,262)
Net cash flows used in investing activities	(97,494)	(463,664)
Cash flows from financing activities
Borrowings under revolving facilities and credit facilities for acquisitions	35,000	365,000
Borrowings under revolving facilities	69,503	381,222
Borrowings under credit facilities		1,883
Payments under revolving facilities, credit facilities and term loan	(130,395)	(462,944)
Debt issuance costs		(2,433)
Dividends paid	(47,552)	(40,458)
Proceeds from stock option exercises	35,015	31,333
Excess tax benefit from stock-based compensation	3,295	4,920
Purchase of common stock	(75,174)
Unvested shares surrendered for tax withholding	(2,326)	(5,838)
Other	(1,240)
Net cash flows (used in) provided by financing activities	(113,874)	272,685
Effect of exchange rate changes on cash and cash equivalents	1,114	695
Net increase (decrease) in cash	30,244	(14,675)
Cash and cash equivalents at beginning of year	230,259	235,136
Cash and cash equivalents at end of period	260,503	220,461
Cash paid for:
Interest	22,610	16,246
Income taxes	62,053	46,749
Significant non-cash activities:
Contingent consideration for acquisition	8,370	2,707
Debt acquired with acquisition of business	$ 4,680	$ 1,400