SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Allowance for sales returns and price protection and other allowances
Valuation and qualifying accounts, reconciliation
Valuation and qualifying accounts, balance at the beginning of period	$ 376	$ 323	$ 292
Valuation and qualifying accounts, additions	212	174	170
Valuation and qualifying accounts, deductions	(209)	(121)	(139)
Valuation and qualifying accounts, balance at the end of period	379	376	323
Allowance for doubtful accounts
Valuation and qualifying accounts, reconciliation
Valuation and qualifying accounts, balance at the beginning of period	5	9	8
Valuation and qualifying accounts, additions	2	1	1
Valuation and qualifying accounts, deductions	(3)	(5)	0
Valuation and qualifying accounts, balance at the end of period	$ 4	$ 5	$ 9

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

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- Definition

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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