Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Revenue	$ 3,755	$ 3,549	$ 7,532	$ 7,040
Expenses:
Operating-related expenses	1,119	1,078	2,272	2,188
Selling and general expenses	803	741	1,568	1,455
Depreciation	26	25	51	48
Amortization of intangibles	270	266	537	531
Total expenses	2,218	2,110	4,428	4,222
Gain on dispositions, net	(3)	0	(3)	0
Equity in income on unconsolidated subsidiaries	(11)	(13)	(22)	(19)
Operating profit	1,551	1,452	3,129	2,837
Other income, net	(28)	(3)	(23)	(13)
Interest expense, net	77	77	154	156
Income before taxes on income	1,502	1,378	2,998	2,694
Provision for taxes on income	342	293	667	540
Net income	1,160	1,085	2,331	2,154
Less: net income attributable to noncontrolling interests	(88)	(74)	(170)	(152)
Net income attributable to S&P Global Inc.	$ 1,072	$ 1,011	$ 2,161	$ 2,002
Net income:
Basic (USD per share)	$ 3.50	$ 3.23	$ 7.05	$ 6.39
Diluted (USD per share)	$ 3.50	$ 3.23	$ 7.04	$ 6.38
Weighted-average number of common shares outstanding:
Basic (shares)	305.9	313.0	306.6	313.3
Diluted (shares)	306.1	313.2	306.9	313.6
Actual shares outstanding at period end (shares)	305.3	313.0	305.3	313.0