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Revenues - Revenue Recognition Timing (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 7,088	$ 5,916	$ 5,468
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	7,088	5,916	5,468
Revenue recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenue recognized	2,618	1,740	1,609
Revenue recognized over time
Disaggregation of Revenue [Line Items]
Revenue recognized	4,470	4,176	3,859
MA
Disaggregation of Revenue [Line Items]
Revenue recognized	3,295	3,056	2,769
MA | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	3,308	3,069	2,777
MA | Revenue recognized at a point in time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	101	102	97
MA | Revenue recognized over time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	3,194	2,954	2,672
MIS
Disaggregation of Revenue [Line Items]
Revenue recognized	3,793	2,860	2,699
MIS | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	3,986	3,046	2,873
MIS | Revenue recognized at a point in time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	2,517	1,638	1,512
MIS | Revenue recognized over time | Operating Segments
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 1,276	$ 1,222	$ 1,187

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