Income Taxes (Significant Components Of Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current
Federal	$ 270	$ 641	$ 348
State	17	57	14
Foreign	158	235	146
Deferred
Federal	17	(29)	112
State	9	28	(5)
Foreign	(33)	(55)	55
Total Income Taxes	$ 438	$ 877	$ 670

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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