Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Line Items]
Valuation allowance	$ 135	$ 129
Foreign earnings for prior years not indefinitely reinvested	48
Foreign unremitted earnings	8,500	7,900
Estimated federal and state income tax amounts net of applicable credits on foreign unremitted earnings	$ 2,400	$ 2,200
Effective income tax rate	8.20%	6.70%	16.00%
Income expense(benefit)	$ 35	$ 33	$ 60
Unrecognized interest and penalties expense	3	12	$ 1
Net interest and penalties	56	63
Unrecognized tax benefits that, if recognized, would impact effective tax rate	186
Gross unrecognized tax benefit liability	209	$ 215
Net indemnification receivables	$ 93
Impact on earnings per diluted share	$ 0.24	$ 0.20	$ 0.19
Expected reduction in uncertain tax positions	$ 77
Domestic Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards	89
Foreign tax credit carryforwards	$ 140
Domestic Tax Authority | Earliest Tax Year
Income Taxes [Line Items]
Operating loss carryforwards, expiration dates	2016
Tax credit carryforwards, expiration dates	2024
Domestic Tax Authority | Latest Tax Year
Income Taxes [Line Items]
Operating loss carryforwards, expiration dates	2032
Tax credit carryforwards, expiration dates	2035
Foreign Tax Authority
Income Taxes [Line Items]
Operating loss carryforwards	$ 1,400
Foreign tax credit carryforwards	52
Foreign Tax Authority | Tax Year 2016
Income Taxes [Line Items]
Operating loss carryforwards	$ 6
Operating loss carryforwards, expiration dates	2016
Foreign Tax Authority | Tax Year 2017
Income Taxes [Line Items]
Operating loss carryforwards	$ 49
Operating loss carryforwards, expiration dates	2017
Foreign Tax Authority | Tax Year 2018
Income Taxes [Line Items]
Operating loss carryforwards	$ 32
Operating loss carryforwards, expiration dates	2018
Foreign Tax Authority | Tax Year 2019
Income Taxes [Line Items]
Operating loss carryforwards	$ 38
Operating loss carryforwards, expiration dates	2019
Foreign Tax Authority | Tax Year 2020
Income Taxes [Line Items]
Operating loss carryforwards	$ 37
Operating loss carryforwards, expiration dates	2020
Foreign Tax Authority | Tax Year 2021
Income Taxes [Line Items]
Operating loss carryforwards	$ 3
Operating loss carryforwards, expiration dates	2021
Foreign Tax Authority | Tax Year After 2021
Income Taxes [Line Items]
Operating loss carryforwards	$ 277
Operating loss carryforwards, expiration dates	After 2021
Foreign Tax Authority | Tax Year No Expiration
Income Taxes [Line Items]
Operating loss carryforwards	$ 1,000
Operating loss carryforwards, expiration dates	No expiration date
Prism Pharmaceuticals, Inc. (Prism)
Income Taxes [Line Items]
Gains (loss) related to the reduction (increase) of contingent payment liabilities	$ 53
Income expense(benefit)	0
Apatech Limited
Income Taxes [Line Items]
Income expense(benefit)	0
Apatech Limited | BioScience
Income Taxes [Line Items]
Gains (loss) related to the reduction (increase) of contingent payment liabilities	38
Colleague
Income Taxes [Line Items]
Infusion pump reserve adjustment	37
Income expense(benefit)	0
Discontinued Operations
Income Taxes [Line Items]
Decrease in gross unrecognized tax benefits	$ (10)