Income Taxes (Jurisdictional Components of Deferred Tax Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, Percent	35.00%
Gross, asset	$ 16,473	$ 232,444
Valuation allowance, asset	(27,264)	(70,940)
Net, asset	(269,655)	(2,643,316)
Net, liability	280,446	2,481,812
Net deferred income tax assets (liabilities)	(10,791)	161,504
U.S. Federal [Member]
Operating Loss Carryforwards [Line Items]
Gross, asset	(7,513)	104,213
Valuation allowance, asset	(12,000)	(29,402)
Net deferred income tax assets (liabilities)	19,513	(74,811)
State [Member]
Operating Loss Carryforwards [Line Items]
Gross, asset	(807)	35,474
Valuation allowance, asset	(14,547)	(41,538)
Net deferred income tax assets (liabilities)	15,354	6,064
Foreign [Member]
Operating Loss Carryforwards [Line Items]
Gross, asset	24,793	41,377
Valuation allowance, asset	(717)	0
Net deferred income tax assets (liabilities)	(24,076)	(41,377)
Other Comprehensive Income (Loss) [Member]
Operating Loss Carryforwards [Line Items]
Gross, asset	0	51,380
Valuation allowance, asset	0	0
Net deferred income tax assets (liabilities)	$ 0	$ (51,380)
Minimum [Member] | U.S. Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2021
Minimum [Member] | State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2013
Maximum [Member] | U.S. Federal [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2032
Maximum [Member] | State [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards, expiration dates	Dec. 31, 2033