Condensed Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net earnings	$ 460,097	$ 372,590
Adjustments to reconcile net earnings to cash flows from operating activities:
Depreciation and amortization of property, plant and equipment	30,442	28,269
Amortization of intangible assets	117,179	111,210
Amortization of deferred financing costs	3,003	2,916
Non-cash stock compensation	47,011	40,040
Changes in operating assets and liabilities, net of acquired businesses:
Accounts receivable	(5,225)	43,101
Unbilled receivables	(16,615)	(13,257)
Inventories	(8,833)	(15,202)
Accounts payable and accrued liabilities	10,342	13,055
Income taxes payable	(54,178)	(12,643)
Other, net	(3,991)	(3,306)
Cash provided by operating activities	579,232	566,773
Cash flows from investing activities:
Acquisitions of businesses, net of cash acquired	(305,254)	(1,014,952)
Capital expenditures	(29,835)	(33,349)
Proceeds from sale of assets	1,262	1,740
Other, net	(6,566)	(144)
Cash used in investing activities	(340,393)	(1,046,705)
Cash flows from financing activities:
Payments under revolving line of credit	(95,000)	290,000
Proceeds from senior notes	0	800,000
Principal payments on senior notes	0	(500,000)
Principal payments on convertible notes	(561)	(2,115)
Cash premiums paid on convertible note conversions	(1,518)	(5,100)
Debt issuance costs	0	(7,717)
Cash dividends to stockholders	(59,827)	(32,706)
Proceeds from stock based compensation, net	26,424	16,839
Stock award tax excess windfall benefit	14,892	7,763
Treasury stock sales	2,080	1,833
Other	38	723
Cash used in financing activities	(113,472)	569,520
Effect of foreign currency exchange rate changes on cash	(20,975)	(198)
Net increase in cash and cash equivalents	104,392	89,390
Cash and cash equivalents, beginning of period	459,720	370,590
Cash and cash equivalents, end of period	$ 564,112	$ 459,980