Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Trade accounts receivable, net
Accounts receivable	$ 1,548		$ 1,591
Less: allowance for doubtful accounts	(75)		(73)
Less: allowance for sales returns	(44)		(46)
Trade accounts receivable, net	1,429		1,472
Allowance for doubtful accounts
Beginning balance	73	$ 75
Charges to expenses	3	4
Utilization of allowances	(1)	1
Ending balance	75	80
Inventories
Finished goods	624		625
Work-in-process	66		94
Raw materials	281		236
Inventories	971		955
Prepaid Expense and Other Assets, Current
Prepaid Expense	98		58
Restricted Cash and Cash Equivalents	127		243
Other Assets, Current	180		240
prepaid and other current assets	405		541
Property, plant and equipment, net
Land	91		91
Buildings and improvements	1,010		981
Equipment, furniture and fixtures	3,027		2,955
Capital in progress	318		338
Property, plant and equipment	4,446		4,365
Less: accumulated depreciation	2,794		2,735
Property, plant and equipment, net	1,652		1,630
Accrued expenses
Legal reserves	1,236		1,062
Payroll and related liabilities	459		572
Business Combination, Contingent Consideration, Liability, Current	52		63
Other	551		615
Accrued expenses	2,298		2,312
Other long-term liabilities
Accrued income taxes	812		781
Legal reserves	515		961
Business Combination, Contingent Consideration, Liability, Noncurrent	74		141
Other Accrued Liabilities, Noncurrent	471		455
Other long-term liabilities	1,872		$ 2,338
Accrued warranties
Beginning Balance	22	23
Provision	6	4
Settlements/ reversals	(3)	(6)
Ending Balance	25	21
Supplemental Balance Sheet Information
Depreciation expense	$ 63	$ 64