Acquisition-Related Intangible Assets that are being Amortized (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,098	$ 2,148
Accumulated Amortization	1,520	1,104
Net Carrying Value	1,578	1,044
Patents and developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,451	915
Accumulated Amortization	698	506
Net Carrying Value	753	409
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,288	950
Accumulated Amortization	573	400
Net Carrying Value	715	550
Trade names and other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	359	283
Accumulated Amortization	249	198
Net Carrying Value	$ 110	$ 85