CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH PROVIDED BY OPERATING ACTIVITIES:
Net earnings	$ 148,280	$ 145,137
Income items not affecting cash:
Depreciation and amortization	44,978	44,859
Deferred income taxes	(38)	599
Stock-based compensation arrangements	20,673	19,997
Other non-cash items	1,485	(1,864)
Changes in operating assets and liabilities, net of acquisitions:
Decrease in accounts receivable	52,856	41,476
Decrease (increase) in inventories	6,481	(22,427)
Increase in prepaid expenses and other current assets	(2,142)	(15,367)
(Increase) decrease in other assets	(4,911)	450
Decrease in accounts payable	(374)	(6,720)
Increase (decrease) in deferred revenue	808	(4,382)
Decrease in accrued payroll and other liabilities	(9,865)	(21,438)
Decrease in accrued income taxes	(12,347)	(14,501)
Increase in pension and other long-term liabilities	3,907	6,852
Cash provided by operating activities	249,791	172,671
CASH USED BY INVESTING ACTIVITIES:
Additions to property and equipment, net	(36,997)	(39,188)
Business acquisitions, net of cash acquired	20,073	0
Other investments	0	3,000
Cash used by investing activities	(57,070)	(42,188)
CASH USED BY FINANCING ACTIVITIES:
Proceeds from long-term debt, including current portion	150,000	0
Repayments of long-term debt	(7,500)	0
Repurchase of common stock	(133,049)	(129,010)
Dividends paid	(38,695)	(32,020)
Proceeds from shares issued pursuant to stock-based compensation plans	5,953	7,117
Excess tax benefit of stock options exercised	928	1,231
Other financing activities	(1,273)	(139)
Cash used by financing activities	(23,636)	(152,821)
Effect of exchange rate changes on cash	1,375	5,981
Net increase (decrease) in cash and cash equivalents	170,460	(16,357)
Cash and cash equivalents, beginning of period	321,739	440,846
Cash and cash equivalents, end of period	$ 492,199	$ 424,489