Other Income, Net (Schedule of Foreign Exchange Gain (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains		$ (15)	$ 11	$ (136)	$ 90	[1]
Net exchange (losses) gains, tax		(2)	31	66	(178)
Net exchange (losses) gains, after-tax		(17)	42	(70)	(88)
Subsidiary Monetary Position Gain (Loss) [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains	[2]	146	29	179	(171)
Net exchange (losses) gains, tax		(60)	25	(47)	(84)
Net exchange (losses) gains, after-tax		86	54	132	(255)
Hedging Program Gain (Loss) [Member]
Foreign Currency Exchange Gain (Loss) [Line Items]
Net exchange (losses) gains		(161)	(18)	(315)	261
Net exchange (losses) gains, tax		58	6	113	(94)
Net exchange (losses) gains, after-tax		$ (103)	$ (12)	$ (202)	$ 167

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

[2] Excludes equity affiliates.