Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 293,188	$ 329,358
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	336,486	312,645
Share-based compensation expense	42,884	49,139
Provision for deferred income taxes	15,154	1,736
Gain on sale of investment	(15,509)	0
Changes in assets and liabilities:
Receivables, net	(47,839)	(186,039)
Inventory	1,875	390
Prepaid expenses and other	(76,048)	181,035
Accounts payable	24,980	43,364
Accrued income taxes	(1,569)	7,919
Deferred revenue	(78,090)	(40,132)
Other accrued liabilities	28,564	9,251
Net cash provided by operating activities	524,076	708,666
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(277,874)	(188,994)
Capitalized software development costs	(144,902)	(142,951)
Purchases of investments	(140,723)	(194,592)
Sales and maturities of investments	289,669	331,728
Purchase of other intangibles	(17,457)	(16,373)
Net cash used in investing activities	(291,287)	(211,182)
CASH FLOWS FROM FINANCING ACTIVITIES:
Long-term debt issuance	600,000	0
Repayment of long-term debt	0	(75,000)
Proceeds from exercise of stock options	125,000	21,343
Payments to taxing authorities in connection with shares directly withheld from associates	(4,860)	(7,308)
Treasury stock purchases	(620,542)	(287,624)
Other	(4,450)	(1,691)
Net cash provided by (used in) financing activities	95,148	(350,280)
Effect of exchange rate changes on cash and cash equivalents	861	(7,159)
Net increase in cash and cash equivalents	328,798	140,045
Cash and cash equivalents at beginning of period	374,126	370,923
Cash and cash equivalents at end of period	$ 702,924	$ 510,968