Other (Loss) Income, Net (Schedule of Foreign Exchange Gain (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains	$ (76)	$ (36)	$ (212)	$ 54	[1]
Net exchange (losses) gains, tax	48	4	114	(174)
Net exchange (losses) gains, after-tax	(28)	(32)	(98)	(120)
Subsidiary Monetary Position Gain (Loss) [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains	6	(210)	185	(381)
Net exchange (losses) gains, tax	18	67	(29)	(17)
Net exchange (losses) gains, after-tax	24	(143)	156	(398)
Hedging Program Gain (Loss) [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains	(82)	174	(397)	435
Net exchange (losses) gains, tax	30	(63)	143	(157)
Net exchange (losses) gains, after-tax	$ (52)	$ 111	$ (254)	$ 278

[1] Includes a charge of $(40) associated with re-measuring the company's Ukrainian hryvnia net monetary assets in the nine months ended September 30, 2015, which was recorded in other (loss) income, net in the company's interim Consolidated Income Statements.