Income Taxes (Reconciliation Of Income Tax Expense (Benefit))(Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income taxes at statutory rate	$ 434,394	$ 262,102	$ 232,362
State and local income taxes, net of federal income tax benefit	6,298	4,951	9,239
Foreign income taxes	(111,217)	(95,198)	(89,385)
Change in valuation allowance	(21,106)	(14,237)	(6,482)
Tax contingencies and audit settlements	2,496	(23,032)	(7,882)
Other, net	(3,306)	(2,711)	(6,215)
Income tax expense (benefit)	$ 307,559	$ 131,875	$ 131,637