Income Taxes (Reconciliation Of Income Tax At Effective Income Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Expense (Benefit), Continuing Operations [Abstract]
Income tax expense at federal statutory rate	$ (170,677)	$ (169,159)	$ (159,870)
State taxes, net of federal benefit	(9,616)	(11,308)	(13,821)
Differences between statutory rate and foreign effective tax rate	66,238	57,876	51,016
Reorganization Items	0	(14,474)	0
income tax benefit, related to worthless stock deduction	0	(14,497)	1,717,466
Change in valuation allowance	(434)	41,700	(1,195,303)
Repatriation of Foreign Earnings, Income tax	0	4,164	(167,115)
Accrual for uncertain tax positions	(706)	(22,719)	(140,596)
Other	2,781	366	(4,098)
Income tax (expense) benefit	$ (112,414)	$ (128,051)	$ 87,679