CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
OPERATING ACTIVITIES:
Net income	$ 269,941	$ 237,343	$ 210,457
Adjustments to reconcile net income to net cash provided by operating activities:
Loss/ (gain) on sale of business	4,867	19	(2,955)
Restructuring and plant closure costs	1,677	2,756	5,571
Write down of other assets	0	1,256	0
Change in fair value of contingent consideration	752	(7,221)	0
Accelerated amortization of term loan financing fees	0	1,241	0
Stock compensation expense	16,339	15,367	15,298
Excess tax benefit of stock options exercised	(30,161)	(17,410)	(24,687)
Depreciation	54,229	49,777	43,966
Amortization	22,054	16,269	9,919
Deferred income taxes	22,678	31,837	26,312
Changes in operating assets and liabilities, net of effect of acquisitions and divestitures:
Accounts receivable	(4,329)	(31,821)	(20,270)
Accounts payable	(107)	(12,539)	(165)
Accrued liabilities	26,201	21,656	56,578
Deferred revenues	931	(1,997)	(878)
Other assets and liabilities	2,376	(429)	6,524
Net cash provided by operating activities	387,448	306,104	325,670
INVESTING ACTIVITIES:
Payments for acquisitions, net of cash acquired	(229,684)	(479,661)	(190,430)
(Purchase of)/ proceeds from short-term investments	(89)	15,942	(14,732)
Proceeds from sale of business and other assets	764	2,371	8,000
Capital expenditures	(65,236)	(53,301)	(48,320)
Net cash used in investing activities	(294,245)	(514,649)	(245,482)
FINANCING ACTIVITIES:
Repayment of long-term debt and other obligations	(102,932)	(65,546)	(55,530)
Borrowings on foreign bank debt	98,620	42,178	51,419
Repayments on foreign bank debt	(69,454)	(16,168)	(38,266)
Borrowings on senior credit facility	863,286	1,643,458	1,007,801
Repayments on senior credit facility	(1,167,595)	(1,372,631)	(1,350,597)
Proceeds from private placement of long-term note	250,000	0	400,000
Payments of deferred financing costs	(956)	(3,740)	(5,757)
Payments on capital lease obligations	(3,192)	(3,333)	(2,894)
Purchase and cancellation of treasury stock	(48,028)	(124,056)	(94,335)
Payments to noncontrolling interests	(580)	(534)	0
Proceeds from other issuance of common stock	64,461	31,286	49,907
Excess tax benefit of stock options exercised	30,161	17,410	24,687
Net cash (used in)/ provided by financing activities	(86,209)	148,324	(13,565)
Effect of exchange rate changes on cash	1,819	3,456	(3,114)
Net increase/ (decrease) in cash and cash equivalents	8,813	(56,765)	63,509
Cash and cash equivalents at beginning of year	22,511	79,276	15,767
Cash and cash equivalents at end of year	31,324	22,511	79,276
NON-CASH ACTIVITIES:
Net issuance of obligations for acquisitions	$ 105,738	$ 58,338	$ 96,295