Provision for Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Provision for income taxes on continuing operations	$ 96	$ 303	$ 886		$ 921
Tax (benefit) expense associated with the company's policy of hedging the foreign currency-denominated monetary assets and liabilities	(4)	258	176		233
Net exchange (losses) gains	(36)	250	54	[1]	44	[1]
Tax benefit associated with a foreign tax court decision	(17)
Minimum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Range estimate of reasonably possible net reduction in unrecognized tax benefits	225		225
Maximum [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Range estimate of reasonably possible net reduction in unrecognized tax benefits	250		250
Provision for income taxes [Member]
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Net exchange (losses) gains	$ (36)	$ 250	$ 54		$ 44

[1] Included a charge of $(40) associated with remeasuring the company's Ukrainian hryvnia net monetary assets in the nine months ended September 30, 2015, as well as a charge of $(58) associated with remeasuring the company's Venezuelan net monetary assets from the official exchange rate to the SICAD II exchange system in the nine months ended September 30, 2014, which were recorded in other income, net in the company's interim Consolidated Income Statements. See Note 4 for additional information.