Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 01, 2017	Jul. 02, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 352,896	$ 316,814
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	278,889	244,096
Share-based compensation expense	39,359	37,954
Provision for deferred income taxes	25,849	19,577
Changes in assets and liabilities (net of businesses acquired):
Receivables, net	(79,723)	40,682
Inventory	211	(2,546)
Prepaid expenses and other	106	(39,172)
Accounts payable	33,647	(5,228)
Accrued income taxes	(3,846)	13,156
Deferred revenue	12,336	(12,334)
Other accrued liabilities	(63,896)	(16,365)
Net cash provided by operating activities	595,828	596,634
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(189,372)	(217,595)
Capitalized software development costs	(142,966)	(155,175)
Purchases of investments	(182,484)	(241,161)
Sales and maturities of investments	187,355	183,311
Purchase of other intangibles	(14,036)	(7,361)
Acquisition of businesses	0	0
Net cash used in investing activities	(341,503)	(437,981)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of options	38,293	24,942
Payments to taxing authorities in connection with shares directly withheld from associates	(7,972)	(3,169)
Treasury stock purchases		(200,075)
Contingent consideration payments for acquisition of businesses	(2,671)	(2,074)
Net cash provided by (used in) financing activities	27,650	(180,376)
Effect of exchange rate changes on cash and cash equivalents	7,594	(2,817)
Net increase (decrease) in cash and cash equivalents	289,569	(24,540)
Cash and cash equivalents at beginning of period	170,861	402,122
Cash and cash equivalents at end of period	460,430	377,582
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