Goodwill And Other Acquired Intangible Assets - Acquired Intangible Assets and Related Amortization (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, net	$ 2,467	$ 1,824
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	2,101	1,623
Accumulated amortization	(381)	(313)
Acquired intangible assets, net	1,720	1,310
Software/product technology
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	663	441
Accumulated amortization	(219)	(177)
Acquired intangible assets, net	444	264
Database
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	179	144
Accumulated amortization	(46)	(29)
Acquired intangible assets, net	133	115
Trade names
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	207	161
Accumulated amortization	(47)	(38)
Acquired intangible assets, net	160	123
Other
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	54	55
Accumulated amortization	(44)	(43)
Acquired intangible assets, net	$ 10	$ 12