Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Oct. 01, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 530,320	$ 486,793
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	425,241	371,385
Share-based compensation expense	59,217	56,896
Provision for deferred income taxes	36,667	(25,922)
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(19,080)	43,699
Inventory	(909)	(5,590)
Prepaid expenses and other	(11,908)	(33,801)
Accounts payable	(12,651)	(19,566)
Accrued income taxes	1,984	53,393
Deferred revenue	12,749	(1,780)
Other accrued liabilities	(62,865)	(17,809)
Net cash provided by operating activities	958,765	907,698
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(262,372)	(327,861)
Capitalized software development costs	(210,033)	(228,803)
Purchases of investments	(337,010)	(387,809)
Sales and maturities of investments	237,912	262,100
Purchase of other intangibles	(22,186)	(13,222)
Net cash used in investing activities	(593,689)	(695,595)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of options	61,688	60,486
Payments to taxing authorities in connection with shares directly withheld from associates	(7,989)	(38,122)
Treasury stock purchases	(23,389)	(200,075)
Contingent consideration payments for acquisition of businesses	(2,671)	(2,074)
Net cash provided by (used in) financing activities	27,639	(179,785)
Effect of exchange rate changes on cash and cash equivalents	9,478	(2,943)
Net increase (decrease) in cash and cash equivalents	402,193	29,375
Cash and cash equivalents at beginning of period	170,861	402,122
Cash and cash equivalents at end of period	573,054	431,497
Summary of acquisition transactions:
Fair value of tangible assets acquired	0	(10,200)
Fair value of intangible assets acquired	0	(25,000)
Fair value of goodwill	0	46,940
Less: Fair value of liabilities assumed	0	(11,740)
Net cash used	$ 0	$ 0