Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Trade accounts receivable, net
Accounts receivable	$ 1,413		$ 1,394
Less: allowance for doubtful accounts	(80)		(75)
Less: allowance for sales returns	(42)		(44)
Trade accounts receivable, net	1,291		1,275
Allowance for doubtful accounts
Beginning balance	75	$ 76
Charges to expenses	4	2
Utilization of allowances	(1)	(6)
Ending balance	80	72
Inventories
Finished goods	700		706
Work-in-process	107		102
Raw materials	215		208
Inventories	1,022		1,016
Property, plant and equipment, net
Land	83		86
Buildings and improvements	964		981
Equipment, furniture and fixtures	2,849		2,793
Capital in progress	185		202
Property, plant and equipment	4,081		4,062
Less: accumulated depreciation	2,617		2,572
Property, plant and equipment, net	1,464		1,490
Accrued expenses
Payroll and related liabilities	403		504
Business Combination, Contingent Consideration, Liability, Current	86		119
Legal reserves	788		773
Other	515		574
Accrued expenses	1,792		1,970
Other long-term liabilities
Accrued income taxes	1,263		1,253
Legal reserves	1,107		1,163
Business Combination, Contingent Consideration, Liability, Noncurrent	102		127
Other Accrued Liabilities, Noncurrent	462		431
Other long-term liabilities	2,934		$ 2,974
Accrued warranties
Beginning Balance	23	25
Provision	4	5
Settlements/ reversals	(6)	(4)
Ending Balance	21	26
Supplemental Balance Sheet Information (Textuals) [Abstract]
Depreciation expense	$ 64	$ 65