Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Revenue	$ 3,575	$ 3,084	$ 10,616	$ 9,345
Expenses:
Operating-related expenses	1,072	995	3,277	3,109
Selling and general expenses	808	741	2,247	2,217
Depreciation	22	22	70	71
Amortization of intangibles	271	260	803	782
Total expenses	2,173	2,018	6,397	6,179
(Gain) loss on dispositions, net	(21)	0	(21)	69
Equity in income on unconsolidated subsidiaries	(11)	(8)	(31)	(33)
Operating profit	1,434	1,074	4,271	3,130
Other loss (income), net	2	(5)	(10)	(5)
Interest expense, net	72	84	227	258
Income before taxes on income	1,360	995	4,054	2,877
Provision for taxes on income	313	181	854	628
Net income	1,047	814	3,200	2,249
Less: net income attributable to noncontrolling interests	(76)	(72)	(228)	(202)
Net income attributable to S&P Global Inc.	$ 971	$ 742	$ 2,972	$ 2,047
Net income:
Basic (USD per share)	$ 3.12	$ 2.34	$ 9.51	$ 6.41
Diluted (USD per share)	$ 3.11	$ 2.33	$ 9.50	$ 6.40
Weighted-average number of common shares outstanding:
Basic (shares)	311.2	317.5	312.6	319.4
Diluted (shares)	311.5	318.0	312.9	319.9
Actual shares outstanding at period end (shares)	310.3	316.8	310.3	316.8