Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets with Finite Lives) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,010	$ 2,038
Accumulated Amortization	(1,082)	(1,048)
Net	928	990
Aggregate amortization expense of identifiable intangible assets	132	126	$ 119
Estimated future amortization of identifiable intangible assets in 2016	125
Estimated future amortization of identifiable intangible assets in 2017	125
Estimated future amortization of identifiable intangible assets in 2018	120
Estimated future amortization of identifiable intangible assets in 2019	110
Estimated future amortization of identifiable intangible assets in 2020	95
Acquired technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	572	560
Accumulated Amortization	(421)	(394)
Net	151	166
Customer-related intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,267	1,302
Accumulated Amortization	(574)	(570)
Net	693	732
Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	132	134
Accumulated Amortization	(61)	(60)
Net	71	74
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	39	42
Accumulated Amortization	(26)	(24)
Net	$ 13	$ 18