Income Taxes (Schedule Of Income Tax (Provisions) Benefits Attributable To Income From Continuing Operations) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Current income taxes	$ (1,000,000)	$ (6,000,000)	$ (1,000,000)	$ (18,000,000)
Deferred income taxes	124,000,000	(26,000,000)	161,000,000	(65,000,000)
Income tax benefit (provision)	$ 123,000,000	$ (32,000,000)	$ 160,000,000	$ (83,000,000)
Effective Tax Rate	36.00%	37.00%	35.00%	29.00%
Statutory Tax Rate	35.00%	35.00%	35.00%	35.00%
Unrecognized tax benefit recognized in period				$ 21,000,000
Unrecognized Tax Benefits	$ 0		$ 0