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Revenues - Revenue Recognition Timing (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 1,898	$ 1,817	$ 3,822	$ 3,603
At Point in Time
Disaggregation of Revenue [Line Items]
Revenue recognized	682	710	1,439	1,408
Over Time
Disaggregation of Revenue [Line Items]
Revenue recognized	1,216	1,107	2,383	2,195
MA
Disaggregation of Revenue [Line Items]
Revenue recognized	888	802	1,747	1,601
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	891	806	1,753	1,608
MA | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	19	18	44	39
MA | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	869	784	1,703	1,562
MIS
Disaggregation of Revenue [Line Items]
Revenue recognized	1,010	1,015	2,075	2,002
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	1,060	1,064	2,174	2,098
MIS | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	663	692	1,395	1,369
MIS | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 347	$ 323	$ 680	$ 633

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