Goodwill and Other Identifiable Intangible Assets (Identifiable Intangible Assets with Finite Lives) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Carrying amount of acquired trademarks with indefinite lives	$ 1,158	$ 1,107
Gross Carrying Amount	3,418	3,146
Accumulated Amortization	(1,373)	(1,163)
Net	2,045	1,983
Aggregate amortization expense of identifiable intangible assets	129	121	$ 132
Estimated future amortization of identifiable intangible assets in 2018	125
Estimated future amortization of identifiable intangible assets in 2019	115
Estimated future amortization of identifiable intangible assets in 2020	105
Estimated future amortization of identifiable intangible assets in 2021	100
Estimated future amortization of identifiable intangible assets in 2022	100
Acquired technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	613	587
Accumulated Amortization	(489)	(446)
Net	124	141
Customer-related
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,437	1,272
Accumulated Amortization	(762)	(618)
Net	675	654
Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	166	142
Accumulated Amortization	(87)	(71)
Net	79	71
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	44	38
Accumulated Amortization	(35)	(28)
Net	$ 9	$ 10