Acquisition-Related Intangible Assets that are being Amortized (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 9,947	$ 3,098
Accumulated Amortization	2,474	1,520
Net Carrying Value	7,473	1,578
Patents and developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,310	1,451
Accumulated Amortization	1,323	698
Net Carrying Value	5,987	753
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,061	1,288
Accumulated Amortization	847	573
Net Carrying Value	1,214	715
Trade names and other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	576	359
Accumulated Amortization	304	249
Net Carrying Value	$ 272	$ 110