Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 28, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 638,583	$ 375,123
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	518,987	509,559
Share-based compensation expense	110,500	73,421
Provision for deferred income taxes	21,554	22,793
Gain on sale of businesses	(216,869)	0
Investment gains	(75,834)	(24,231)
Changes in assets and liabilities:
Receivables, net	(78,695)	24,558
Inventory	8,206	1,877
Prepaid expenses and other	(36,664)	(75,191)
Accounts payable	(60,808)	(3,346)
Accrued income taxes	33,005	(795)
Deferred revenue	(32,071)	(89,400)
Other accrued liabilities	94,151	61,156
Net cash provided by operating activities	924,045	875,524
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(238,053)	(388,588)
Capitalized software development costs	(224,710)	(211,284)
Purchases of investments	(511,378)	(317,979)
Sales and maturities of investments	213,309	507,258
Purchase of other intangibles	(29,698)	(25,794)
Sale of businesses	229,471	0
Acquisition of businesses, net of cash acquired	(35,766)	0
Net cash used in investing activities	(596,825)	(436,387)
CASH FLOWS FROM FINANCING ACTIVITIES:
Long-term debt issuance	300,000	600,000
Repayments of Long-term Debt	(2,500)	0
Proceeds from exercise of stock options	202,680	188,474
Payments to taxing authorities in connection with shares directly withheld from associates	(22,623)	(14,994)
Treasury stock purchases	(650,000)	(1,020,542)
Dividends paid	(166,277)	(57,293)
Other financing activities	(6,807)	(8,450)
Net cash provided by (used in) financing activities	(345,527)	(312,805)
Effect of exchange rate changes on cash and cash equivalents	(4,382)	(4,028)
Net increase (decrease) in cash and cash equivalents	(22,689)	122,304
Cash and cash equivalents at beginning of period	441,843	374,126
Cash and cash equivalents at end of period	$ 419,154	$ 496,430