Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Revenue	$ 3,888	$ 3,575	$ 11,420	$ 10,616
Expenses:
Operating-related expenses	1,121	1,065	3,393	3,254
Selling and general expenses	805	815	2,372	2,270
Depreciation	28	22	79	70
Amortization of intangibles	266	271	803	803
Total expenses	2,220	2,173	6,647	6,397
Gain on dispositions	0	(21)	(3)	(21)
Equity in income on unconsolidated subsidiaries	(7)	(11)	(28)	(31)
Operating profit	1,675	1,434	4,804	4,271
Other income, net	(2)	2	(25)	(10)
Interest expense, net	79	72	233	227
Income before taxes on income	1,598	1,360	4,596	4,054
Provision for taxes on income	333	313	1,000	854
Net income	1,265	1,047	3,596	3,200
Less: net income attributable to noncontrolling interests	(89)	(76)	(259)	(228)
Net income attributable to S&P Global Inc.	$ 1,176	$ 971	$ 3,337	$ 2,972
Net income:
Basic (USD per share)	$ 3.86	$ 3.12	$ 10.91	$ 9.51
Diluted (USD per share)	$ 3.86	$ 3.11	$ 10.90	$ 9.50
Weighted-average number of common shares outstanding:
Basic (shares)	304.3	311.2	305.8	312.6
Diluted (shares)	304.5	311.5	306.1	312.9
Actual shares outstanding at period end (shares)	303.4	310.3	303.4	310.3