Goodwill And Other Acquired Intangible Assets - Acquired Intangible Assets and Related Amortization (Detail) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, net	$ 1,717	$ 1,498
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	1,524	1,325
Accumulated amortization	(287)	(235)
Acquired intangible assets, net	1,237	1,090
Trade secrets
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	30	30
Accumulated amortization	(29)	(29)
Acquired intangible assets, net	1	1
Software/product technology
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	378	372
Accumulated amortization	(152)	(131)
Acquired intangible assets, net	226	241
Trade names
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	152	150
Accumulated amortization	(35)	(30)
Acquired intangible assets, net	117	120
Other
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	182	80
Accumulated amortization	(46)	(34)
Acquired intangible assets, net	$ 136	$ 46