Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful accounts
Beginning balance	$ 105	$ 112	$ 119
Net (credits) charges to expenses		10	5
Utilization of allowances		(15)	(12)
Ending balance	119	105	112
Trade accounts receivable, net
Accounts receivable	1,394	1,288
Less: allowance for doubtful accounts	(75)	(76)
Less: allowance for sales returns	(44)	(29)
Trade accounts receivable, net	1,275	1,183
Inventories
Finished goods	706	649
Work-in-process	102	97
Raw materials	208	200
Inventories	1,016	946
Property, plant and equipment, net
Land	86	80
Buildings and improvements	981	944
Equipment, furniture and fixtures	2,793	2,633
Capital in progress	202	189
Property, plant and equipment	4,062	3,846
Less: accumulated depreciation	2,572	2,339
Property, plant and equipment, net	1,490	1,507	1,546
Accrued expenses
Payroll and related liabilities	504	512
Legal reserves	773	694
Business Combination, Contingent Consideration, Liability, Current	119	158
Other	574	586
Accrued expenses	1,970	1,950
Other long-term liabilities
Accrued income taxes	1,253	1,231
Legal reserves	1,163	883
Business Combination, Contingent Consideration, Liability, Noncurrent	127	116
Other Long-Term Liabilities	431	436
Other long-term liabilities	2,974	2,666
Allowance for Doubtful Accounts [Member]
Allowance for doubtful accounts
Beginning balance	76	81	88
Net (credits) charges to expenses	15	10	5
Utilization of allowances	(16)	(15)	(12)
Ending balance	$ 75	$ 76	$ 81