Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 29, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 281,907	$ 293,188
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	343,941	336,486
Share-based compensation expense	72,580	42,884
Provision for deferred income taxes	12,884	15,154
Investment gains	(26,410)	(15,509)
Changes in assets and liabilities:
Receivables, net	(48,426)	(47,839)
Inventory	5,509	1,875
Prepaid expenses and other	(36,431)	(76,048)
Accounts payable	(31,711)	24,980
Accrued income taxes	26,358	(1,569)
Deferred revenue	(66,137)	(78,090)
Other accrued liabilities	8,032	28,564
Net cash provided by operating activities	542,096	524,076
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(166,296)	(277,874)
Capitalized software development costs	(151,393)	(144,902)
Purchases of investments	(91,957)	(140,723)
Sales and maturities of investments	81,022	289,669
Purchase of other intangibles	(20,656)	(17,457)
Payments to Acquire Businesses, Net of Cash Acquired	(35,766)	0
Net cash used in investing activities	(385,046)	(291,287)
CASH FLOWS FROM FINANCING ACTIVITIES:
Long-term debt issuance	300,000	600,000
Proceeds from exercise of stock options	156,908	125,000
Payments to taxing authorities in connection with shares directly withheld from associates	(14,217)	(4,860)
Treasury stock purchases	(650,000)	(620,542)
Dividends paid	(111,101)	0
Other financing activities	(4,159)	(4,450)
Net cash provided by (used in) financing activities	(322,569)	95,148
Effect of exchange rate changes on cash and cash equivalents	(6,429)	861
Net increase (decrease) in cash and cash equivalents	(171,948)	328,798
Cash and cash equivalents at beginning of period	441,843	374,126
Cash and cash equivalents at end of period	$ 269,895	$ 702,924