Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 2,861	$ 2,087	$ 8,244	$ 6,209
Expenses:
Operating-related expenses	994	543	2,754	1,598
Selling and general expenses	720	423	2,442	1,162
Depreciation	31	20	93	63
Amortization of intangibles	267	21	645	74
Total expenses	2,012	1,007	5,934	2,897
Loss (gain) on dispositions	2	(3)	(1,897)	(5)
Equity in income on unconsolidated subsidiaries	(6)	0	(21)	0
Operating profit	853	1,083	4,228	3,317
Other income, net	(37)	(22)	(86)	(51)
Interest expense, net	71	31	218	94
(Gain) loss on extinguishment of debt, net	(4)	0	15	0
Income before taxes on income	823	1,074	4,081	3,274
Provision for taxes on income	145	213	1,053	747
Net income	678	861	3,028	2,527
Less: net income attributable to noncontrolling interests	(70)	(64)	(213)	(178)
Net income attributable to S&P Global Inc.	$ 608	$ 797	$ 2,815	$ 2,349
Earnings per share attributable to S&P Global Inc. common shareholders:
Basic (USD per share)	$ 1.84	$ 3.31	$ 8.95	$ 9.76
Diluted (USD per share)	$ 1.84	$ 3.30	$ 8.91	$ 9.72
Weighted-average number of common shares outstanding:
Basic (shares)	329.6	240.9	314.5	240.8
Diluted (shares)	330.9	241.7	315.7	241.7
Actual shares outstanding at period end (shares)	325.8	241.0	325.8	241.0