Supplemental Financial Information (Details 5) (USD $) In Millions	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Amortization of Purchased Intangible Assets
Amortization of purchased intangible assets	$ 22	$ 14	$ 44	$ 24
Cost of product revenue [Member]
Amortization of Purchased Intangible Assets
Amortization of purchased intangible assets	14	9	29	16
Other operating expenses [Member]
Amortization of Purchased Intangible Assets
Amortization of purchased intangible assets	$ 8	$ 5	$ 15	$ 8

Aggregate amount of amortization expense recognized for intangible asset during the period. A recognized intangible asset shall be amortized over its estimated useful life to the reporting entity unless that life is determined to be indefinite. If an intangible asset has a finite useful life, but the precise length of that life is not known, that intangible asset shall be amortized over the best estimate of its useful life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(2)

Name:	us-gaap_FiniteLivedIntangibleAssetsAmortizationExpense
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration