CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income	$ 143,889	$ 135,539
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	18,986	17,460
Amortization of intangible assets	23,146	20,137
Amortization of debt issuance costs	758	860
Share-based compensation expense	11,603	11,802
Deferred income taxes	3,669	524
Excess tax benefit from share-based compensation	0	(4,083)
Non-cash interest expense associated with forward starting swaps	3,443	3,539
Changes in (net of effect from acquisitions):
Receivables	(22,625)	(15,274)
Inventories	11,386	(10,473)
Other current assets	(17,233)	(630)
Trade accounts payable	(3,367)	4,158
Accrued expenses	(12,675)	(15,886)
Other — net	(2,137)	755
Net cash flows provided by operating activities	158,843	148,428
Cash flows from investing activities
Additions of property, plant and equipment	(17,052)	(23,826)
Acquisition of businesses, net of cash acquired	221,556	173,333
Other — net	27	(105)
Net cash flows used in investing activities	(238,581)	(197,264)
Cash flows from financing activities
Borrowings under revolving facilities	280,391	350,342
Payments under revolving facilities	(266,203)	(240,586)
Payment of 2.58% Senior Euro Notes	0	(88,420)
Debt issuance costs	(92)	(1,323)
Dividends paid	(51,430)	(46,910)
Proceeds from stock option exercises	16,934	13,459
Excess tax benefit from share-based compensation	0	4,083
Purchase of common stock	(55,971)	(113,592)
Shares surrendered for tax withholding	(4,830)	(3,202)
Net cash flows provided by (used in) financing activities	118,799	(126,149)
Effect of exchange rate changes on cash and cash equivalents	(5,591)	(22,657)
Net increase (decrease) in cash	33,470	(197,642)
Cash and cash equivalents at beginning of year	328,018	509,137
Cash and cash equivalents at end of period	361,488	311,495
Cash paid for:
Interest	17,019	17,296
Income taxes — net	49,142	36,338
3.2% Senior Notes, due June 2023
Cash flows from financing activities
Proceeds from Senior Notes	100,000	0
3.37% Senior Notes, due June 2025
Cash flows from financing activities
Proceeds from Senior Notes	$ 100,000	$ 0