Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 4,965	[1]	$ 968	[2]	$ 2,497
Other comprehensive (loss) income, net of tax:
Currency translation adjustments, net of tax benefit of ($39) in 2016, ($107) in 2015 and ($132) in 2014	(247)		(1,094)		(1,332)
Pension and other employee benefits, net of tax (benefit) expense of ($36) in 2016, $104 in 2015 and ($193) in 2014	(97)		165		(400)
Hedging activities, net of tax (benefit) expense of ($2) in 2016, $9 in 2015 and $14 in 2014	(4)		15		24
Available-for-sale securities, net of tax expense (benefit) of zero in 2016, $6 in 2015 and ($2) in 2014	(4,432)		4,438		34
Total other comprehensive income (loss), net of tax	(4,780)		3,524		(1,674)
Comprehensive income	$ 185		$ 4,492		$ 823

[1] The first quarter of 2016 included benefits of $3.1 billion related to business optimization, separation-related costs, Retained Stake transactions, a loss on debt extinguishment, and product-related items. The second quarter of 2016 included benefits of $1.0 billion related to business optimization, separation-related costs, Retained Stake transactions, and asset impairment. The third quarter of 2016 included charges of $155 million related to business optimization, separation-related costs, a loss on debt extinguishment, and a tax matter. The fourth quarter of 2016 included charges of $47 million related to business optimization, separation-related costs, and reserve items and adjustments.

[2] The first quarter of 2015 included charges of $29 million related to business optimization, Gambro integration costs, and separation-related costs. The second quarter of 2015 included benefits of $5 million related to business optimization, Gambro integration costs, separation-related costs, and tax and legal reserves. The third quarter of 2015 included charges of $191 million related to business optimization, Gambro integration costs, separation-related costs, a loss on debt extinguishment, and product-related items. The fourth quarter of 2015 included $17 million related to business optimization, Gambro integration costs, product-related items, separation-related costs, and reserve items and adjustments.