Segment and Related Information - Schedule of Operating Results (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue	$ 4,146	$ 3,755	$ 8,318	$ 7,532
Segment operating profit	1,812	1,551	3,814	3,129
Equity in income on unconsolidated subsidiaries	0	(11)	0	(22)
Other income, net	(4)	(28)	(6)	(23)
Interest expense, net	87	77	182	154
Income before taxes on income	1,729	1,502	3,638	2,998
Reportable Legal Entities
Disaggregation of Revenue [Line Items]
Revenue	4,199	3,804	8,422	7,629
Significant expenses	1,943	1,849	3,961	3,740
Less: other segment items	340	335	472	637
Reportable Legal Entities \| Market Intelligence
Disaggregation of Revenue [Line Items]
Revenue	1,290	1,217	2,586	2,416
Significant expenses	824	787	1,684	1,593
Less: other segment items	173	171	169	344
Reportable Legal Entities \| Ratings
Disaggregation of Revenue [Line Items]
Revenue	1,339	1,148	2,641	2,297
Significant expenses	417	396	837	784
Less: other segment items	9	37	10	42
Reportable Legal Entities \| Energy
Disaggregation of Revenue [Line Items]
Revenue	568	555	1,221	1,167
Significant expenses	287	285	617	603
Less: other segment items	48	37	84	76
Reportable Legal Entities \| Mobility
Disaggregation of Revenue [Line Items]
Revenue	468	438	921	858
Significant expenses	267	253	539	511
Less: other segment items	97	81	185	157
Reportable Legal Entities \| Indices
Disaggregation of Revenue [Line Items]
Revenue	534	446	1,053	891
Significant expenses	148	128	284	249
Less: other segment items	13	9	24	18
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	4,146	3,755	8,318	7,532
Segment operating profit	1,916	1,620	3,989	3,252
Operating Segments \| Market Intelligence
Disaggregation of Revenue [Line Items]
Revenue	1,286	1,214	2,579	2,410
Segment operating profit	293	259	733	479
Operating Segments \| Ratings
Disaggregation of Revenue [Line Items]
Revenue	1,293	1,105	2,550	2,212
Segment operating profit	913	715	1,794	1,471
Operating Segments \| Energy
Disaggregation of Revenue [Line Items]
Revenue	568	555	1,221	1,167
Segment operating profit	233	233	520	488
Operating Segments \| Mobility
Disaggregation of Revenue [Line Items]
Revenue	468	438	921	858
Segment operating profit	104	104	197	190
Operating Segments \| Indices
Disaggregation of Revenue [Line Items]
Revenue	531	443	1,047	885
Segment operating profit	373	309	745	624
Intersegment Elimination
Disaggregation of Revenue [Line Items]
Revenue	(53)	(49)	(104)	(97)
Less: other segment items	(53)	(49)	(104)	(97)
Intersegment Elimination \| Market Intelligence
Disaggregation of Revenue [Line Items]
Revenue	(4)	(3)	(7)	(6)
Intersegment Elimination \| Ratings
Disaggregation of Revenue [Line Items]
Revenue	(46)	(43)	(91)	(85)
Intersegment Elimination \| Energy
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Intersegment Elimination \| Mobility
Disaggregation of Revenue [Line Items]
Revenue	0	0	0	0
Intersegment Elimination \| Indices
Disaggregation of Revenue [Line Items]
Revenue	(3)	(3)	(6)	(6)
Corporate Unallocated
Disaggregation of Revenue [Line Items]
Segment operating profit	$ 104	$ 80	$ 175	$ 145

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