Goodwill and Other Intangible Assets - Schedule of Change in Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 34,545	$ 3,506
Acquisitions	239	31,742
Dispositions		(246)
Reclassifications		(437)
Other	66	(20)
Goodwill, ending balance	34,850	34,545
Operating Segments | Market Intelligence
Goodwill [Roll Forward]
Goodwill, beginning balance	18,110	1,808
Acquisitions	62	16,556
Dispositions		(246)
Reclassifications		0
Other	11	(8)
Goodwill, ending balance	18,183	18,110
Operating Segments | Ratings
Goodwill [Roll Forward]
Goodwill, beginning balance	257	245
Acquisitions	3	22
Dispositions		0
Reclassifications		0
Other	14	(10)
Goodwill, ending balance	274	257
Operating Segments | Commodity Insights
Goodwill [Roll Forward]
Goodwill, beginning balance	5,522	525
Acquisitions	6	5,009
Dispositions		0
Reclassifications		0
Other	10	(12)
Goodwill, ending balance	5,538	5,522
Operating Segments | Mobility
Goodwill [Roll Forward]
Goodwill, beginning balance	8,695	0
Acquisitions	168	8,695
Dispositions		0
Reclassifications		0
Other	0	0
Goodwill, ending balance	8,863	8,695
Operating Segments | Indices
Goodwill [Roll Forward]
Goodwill, beginning balance	1,399	376
Acquisitions	0	1,023
Dispositions		0
Reclassifications		0
Other	18	0
Goodwill, ending balance	1,417	1,399
Operating Segments | Engineering Solutions
Goodwill [Roll Forward]
Goodwill, beginning balance	0	0
Acquisitions	0	437
Dispositions		0
Reclassifications		(437)
Other	0	0
Goodwill, ending balance	0	0
Corporate
Goodwill [Roll Forward]
Goodwill, beginning balance	562	552
Acquisitions	0	0
Dispositions		0
Reclassifications		0
Other	13	10
Goodwill, ending balance	$ 575	$ 562