CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities
Net income	$ 223,477	$ 206,084
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,870	19,957
Amortization of intangible assets	17,953	20,667
Amortization of debt issuance expenses	669	664
Share-based compensation expense	14,413	13,252
Deferred income taxes	10,685	(3,021)
Non-cash interest expense associated with forward starting swaps	3,171	3,259
Changes in (net of the effect from acquisitions):
Receivables	(14,177)	(40,044)
Inventories	(21,007)	(28,011)
Other current assets	(12,382)	17,798
Trade accounts payable	17,276	5,432
Accrued expenses	(39,602)	(21,131)
Other - net	(508)	(2,480)
Net cash flows provided by operating activities	219,838	192,426
Cash flows from investing activities
Purchases of property, plant and equipment	(25,742)	(20,968)
Purchase of intellectual property	0	(4,000)
Proceeds from disposal of fixed assets	780	0
Other - net	501	(861)
Net cash flows used in investing activities	(24,461)	(25,829)
Cash flows from financing activities
Dividends paid	(71,283)	(61,916)
Proceeds from stock option exercises	20,761	13,616
Repurchases of common stock	(54,668)	(19,499)
Shares surrendered for tax withholding	(11,509)	(10,750)
Settlement of foreign exchange contracts	0	6,593
Other - net	(1,929)	0
Net cash flows used in financing activities	(118,628)	(71,956)
Effect of exchange rate changes on cash and cash equivalents	33	(11,840)
Net increase in cash	76,782	82,801
Cash and cash equivalents at beginning of year	466,407	375,950
Cash and cash equivalents at end of period	543,189	458,751
Cash paid for:
Interest	18,282	18,223
Income taxes	55,702	38,190
Significant non-cash activities:
Capital expenditures for construction of new leased facility	$ 0	$ 11,971