Supplemental Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Allowance for doubtful accounts
Beginning balance	$ 88	$ 81
Charges to expenses	3	9
Utilization of allowances	(5)
Ending balance	86	90
Trade accounts receivable, net
Accounts receivable	1,346		1,336
Less: allowance for doubtful accounts	(86)		(88)
Less: allowance for sales returns	(28)		(31)
Trade accounts receivable, net	1,232		1,217
Inventories
Finished goods	583		598
Work-in-process	78		70
Raw materials	190		216
Inventories	851		884
Property, plant and equipment, net
Land	81		81
Buildings and improvements	895		873
Equipment, furniture and fixtures	2,346		2,348
Capital in progress	195		218
Property, plant and equipment	3,517		3,520
Less: accumulated depreciation	1,980		1,956
Property, plant and equipment, net	1,537		1,564
Accrued expenses
Legal reserves	127		100
Payroll and related liabilities	356		452
Accrued contingent consideration	132		120
Other	571		612
Accrued expenses	1,186		1,284
Other long-term liabilities
Legal reserves	521		391
Accrued income taxes	1,243		1,215
Accrued contingent consideration	510		543
Other Long-Term Liabilities	390		398
Other long-term liabilities	2,664		2,547
Accrued warranties
Beginning Balance	26	30
Provision	4
Settlements/ reversals	(3)	(7)
Ending Balance	27	23
Supplemental Balance Sheet Information (Textuals) [Abstract]
Depreciation expense	$ 61	$ 66