Income Taxes (Provision For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current, Federal	$ 136,202	$ 245,189	$ 284,489
Current, State	23,134	24,898	28,406
Current, Foreign	29,823	21,138	19,017
Total Current	189,159	291,225	331,912
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Deferred, Federal	(23,181)	47,046	(4,250)
Deferred, State	(6,787)	2,688	7,038
Deferred, Foreign	(4,013)	1,121	(2,953)
Total, Deferred	(33,981)	50,855	(165)
Total Current and Deferred	$ 155,178	$ 342,080	$ 331,747