Goodwill And Other Acquired Intangible Assets - Acquired Intangible Assets and Related Amortization (Detail) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, net	$ 1,805	$ 1,866
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	2,150	2,165
Accumulated amortization	(741)	(724)
Acquired intangible assets, net	1,409	1,441
Software/product technology
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	769	774
Accumulated amortization	(540)	(526)
Acquired intangible assets, net	229	248
Database
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	163	164
Accumulated amortization	(106)	(103)
Acquired intangible assets, net	57	61
Trade names
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	199	201
Accumulated amortization	(98)	(96)
Acquired intangible assets, net	101	105
Other
Finite-Lived Intangible Assets [Line Items]
Acquired intangible assets, gross	64	64
Accumulated amortization	(55)	(53)
Acquired intangible assets, net	$ 9	$ 11