Segment Information - Financial Information by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	$ 1,817	$ 1,494	$ 3,603	$ 2,964
Operating, SG&A	915	841	1,795	1,655
Adjusted Operating Income	902	653	1,808	1,309
Depreciation and amortization	110	93	210	181
Restructuring	2	10	7	24
Charges related to asset abandonment	15	0	15	0
Operating income	775	550	1,576	1,104
Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	(53)	(50)	(103)	(98)
Operating, SG&A	(53)	(50)	(103)	(98)
Adjusted Operating Income	0	0	0	0
Depreciation and amortization	0	0	0	0
Restructuring	0	0	0	0
Charges related to asset abandonment	0	0	0	0
MA
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	802	747	1,601	1,484
MA | Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	4	4	7	7
MA | Operating Segments
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	806	751	1,608	1,491
Operating, SG&A	576	541	1,140	1,067
Adjusted Operating Income	230	210	468	424
Depreciation and amortization	90	74	172	144
Restructuring	1	8	3	16
Charges related to asset abandonment	15	0	15	0
MIS
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	1,015	747	2,002	1,480
MIS | Eliminations
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	49	46	96	91
MIS | Operating Segments
Segment Reporting Information, Operating Income (Loss) [Abstract]
Revenue	1,064	793	2,098	1,571
Operating, SG&A	392	350	758	686
Adjusted Operating Income	672	443	1,340	885
Depreciation and amortization	20	19	38	37
Restructuring	1	2	4	8
Charges related to asset abandonment	$ 0	$ 0	$ 0	$ 0