Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 204,959	$ 281,907
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	354,567	343,941
Share-based compensation expense	101,891	72,580
Provision for deferred income taxes	3,232	12,884
Investment gains	0	(26,410)
Asset Impairment Charges	115,812	0
Changes in assets and liabilities:
Receivables, net	(41,751)	(48,426)
Inventory	2,868	5,509
Prepaid expenses and other	9,914	(36,431)
Accounts payable	54,088	(31,711)
Accrued income taxes	11,585	26,358
Deferred revenue	(676)	(66,137)
Other accrued liabilities	3,080	8,032
Net cash provided by operating activities	819,569	542,096
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital purchases	(199,281)	(166,296)
Capitalized software development costs	(167,108)	(151,393)
Purchases of investments	(558,686)	(91,957)
Sales and maturities of investments	380,156	81,022
Purchase of other intangibles	(16,031)	(20,656)
Acquisition of businesses, net of cash acquired	(349,869)	(35,766)
Net cash used in investing activities	(910,819)	(385,046)
CASH FLOWS FROM FINANCING ACTIVITIES:
Long-term debt issuance	500,000	300,000
Proceeds from exercise of stock options	154,900	156,908
Payments to taxing authorities in connection with shares directly withheld from associates	(36,346)	(14,217)
Treasury stock purchases	(750,000)	(650,000)
Dividends paid	(135,260)	(111,101)
Other financing activities	(8,672)	(4,159)
Net cash provided by (used in) financing activities	(275,378)	(322,569)
Effect of exchange rate changes on cash and cash equivalents	(2,583)	(6,429)
Net increase (decrease) in cash and cash equivalents	(369,211)	(171,948)
Cash and cash equivalents at beginning of period	615,615	441,843
Cash and cash equivalents at end of period	$ 246,404	$ 269,895