Other Income, Net (Schedule of Other Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Line Items]
Royalty income		$ 138	$ 156	$ 163
Interest income		129	129	136
Equity in earnings (loss) of affiliates, net		49	(36)	22
Gain on sale of equity method investment		0	0	9
Net gains on sales of businesses and other assets		92	710	21
Net exchange gains (losses)	[1]	30	196	(101)
Cozaar/Hyzaar income		0	0	14
Miscellaneous income and expenses, net	[2]	259	122	107
Total		697	1,277	371
Foreign currency loss due to devaluation of Venezuelan bolivar[Member]
Other Income and Expenses [Line Items]
Net exchange gains (losses)			(58)	$ (33)
Foreign currency loss due to devaluation of Ukrainian hryvnia [Member]
Other Income and Expenses [Line Items]
Net exchange gains (losses)		(58)	(46)
Foreign currency loss due to devaluation of Argentinian peso [Member]
Other Income and Expenses [Line Items]
Net exchange gains (losses)		$ (40)	$ (14)

[1] The $30 net exchange gain for the year ended December 31, 2015, includes $(58) and $(40) exchange loss associated with the devaluation of the Ukrainian hryvnia and the Argentina peso, respectively. The $196 net exchange gain for the year ended December 31, 2014, includes a $(58), $(46), and $(14) exchange losses, associated with the devaluation of the Venezuelan bolivar, Ukranian hryvnia, and Argentinian peso, respectively. The $(101) net exchange loss for the year ended December 31, 2013, includes a $(33) exchange loss, associated with the devaluation of the Venezuelan bolivar.

[2] Miscellaneous income and expenses, net, includes interest items, certain insurance recoveries, litigation settlements and other items.