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Revenues - Revenue Recognition Timing (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 1,924	$ 1,786
At Point in Time
Disaggregation of Revenue [Line Items]
Revenue recognized	757	698
Over Time
Disaggregation of Revenue [Line Items]
Revenue recognized	1,167	1,088
MA
Disaggregation of Revenue [Line Items]
Revenue recognized	859	799
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	862	802
MA | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	25	21
MA | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	834	778
MIS
Disaggregation of Revenue [Line Items]
Revenue recognized	1,065	987
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	1,114	1,034
MIS | At Point in Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	732	677
MIS | Over Time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 333	$ 310

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