Supplemental Financial Information (Accrued Liabilities) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Accrued Liabilities, Current [Abstract]
Accrued rebates	$ 516	$ 319
Accrued royalties	14		15
Accrued settlement charges	71		66
Accrued legal costs	17		15
Accrued taxes	24		20
Warranty reserve	19		19
Restructuring liabilities	11		17
Other	98		86
Accrued liabilities	770		647
Other Liabilities, Noncurrent [Abstract]
Deferred rent	43		46
Accrued taxes	71		72
Deferred tax liabilities	29		35
Accrued settlement charges	21		25
Deferred revenue	128		33
Other long-term liabilities	19		23
Other long-term liabilities, Total	311		234
Accrued Rebate Activity [Roll Forward]
Beginning balance	409	383
Charged as a reduction of revenue	187	161
Reversal of unclaimed rebates	(6)	(6)
Payments	(74)	(219)
Ending balance	516	319
Restructuring Reserve [Roll Forward]
Beginning balance	17
Charged to expense	5	0
Cash payments	(11)
Ending balance	$ 11