Segment and Related Information - Schedule of Revenue Disaggregated by Type (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,491	$ 3,160
Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	794	598
Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	2,697	2,562
Subscription
Disaggregation of Revenue [Line Items]
Total revenue	1,778	1,740
Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	794	598
Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	435	403
Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	244	210
Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	99	84
Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	141	125
Operating Segments | Market Intelligence
Disaggregation of Revenue [Line Items]
Total revenue	1,142	1,071
Operating Segments | Market Intelligence | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	54	56
Operating Segments | Market Intelligence | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	1,088	1,015
Operating Segments | Market Intelligence | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	947	890
Operating Segments | Market Intelligence | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	54	56
Operating Segments | Market Intelligence | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Market Intelligence | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Market Intelligence | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Market Intelligence | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	141	125
Operating Segments | Ratings
Disaggregation of Revenue [Line Items]
Total revenue	1,062	824
Operating Segments | Ratings | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	582	379
Operating Segments | Ratings | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	480	445
Operating Segments | Ratings | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Ratings | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	582	379
Operating Segments | Ratings | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	480	445
Operating Segments | Ratings | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Ratings | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Ratings | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Commodity Insights
Disaggregation of Revenue [Line Items]
Total revenue	559	508
Operating Segments | Commodity Insights | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	83	80
Operating Segments | Commodity Insights | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	476	428
Operating Segments | Commodity Insights | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	450	409
Operating Segments | Commodity Insights | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	83	80
Operating Segments | Commodity Insights | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Commodity Insights | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Commodity Insights | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	26	19
Operating Segments | Commodity Insights | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Mobility
Disaggregation of Revenue [Line Items]
Total revenue	386	358
Operating Segments | Mobility | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	75	77
Operating Segments | Mobility | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	311	281
Operating Segments | Mobility | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	311	281
Operating Segments | Mobility | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	75	77
Operating Segments | Mobility | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Mobility | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Mobility | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Mobility | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Indices
Disaggregation of Revenue [Line Items]
Total revenue	387	341
Operating Segments | Indices | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Indices | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	387	341
Operating Segments | Indices | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	70	66
Operating Segments | Indices | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Indices | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Indices | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	244	210
Operating Segments | Indices | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	73	65
Operating Segments | Indices | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Engineering Solutions
Disaggregation of Revenue [Line Items]
Total revenue	0	100
Operating Segments | Engineering Solutions | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	0	6
Operating Segments | Engineering Solutions | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	0	94
Operating Segments | Engineering Solutions | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	0	94
Operating Segments | Engineering Solutions | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	6
Operating Segments | Engineering Solutions | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Engineering Solutions | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Engineering Solutions | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Operating Segments | Engineering Solutions | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination
Disaggregation of Revenue [Line Items]
Total revenue	(45)	(42)
Intersegment Elimination | Services transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination | Services transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	(45)	(42)
Intersegment Elimination | Subscription
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination | Non-subscription / Transaction
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination | Non-transaction
Disaggregation of Revenue [Line Items]
Total revenue	(45)	(42)
Intersegment Elimination | Asset-linked fees
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination | Sales usage-based royalties
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Intersegment Elimination | Recurring variable revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 0	$ 0