Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 46,185	$ (160,939)	$ (627,807)	$ (340,528)
Total consolidated loss from continuing operations before income tax	(145,311)	$ (964,645)	(518,254)	$ (1,084,636)
Deferred tax charge related to restructuring	395,100		395,100
Discrete tax benefit from amortization of prepaid asset	42,600
Discrete tax benefit from outside basis differences	$ 635,000		$ 635,000