Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 814	$ 678	$ 2,249	$ 3,028
Other comprehensive income:
Foreign currency translation adjustments	(113)	(255)	(40)	(371)
Income tax effect	(6)	(15)	2	(42)
Foreign currency translation adjustment, net of income tax effect	(119)	(270)	(38)	(413)
Pension and other postretirement benefit plans	0	4	(12)	5
Income tax effect	0	(1)	4	(1)
Pension and other postretirement benefit plans, net of income tax effect	0	3	(8)	4
Unrealized gain on cash flow hedges	115	54	115	283
Income tax effect	(29)	(14)	(29)	(71)
Unrealized gain on investment and forward exchange contracts, net of income tax effect	86	40	86	212
Comprehensive income	781	451	2,289	2,831
Less: comprehensive income attributable to nonredeemable noncontrolling interests	(7)	(6)	(19)	(18)
Less: comprehensive income attributable to redeemable noncontrolling interests	(65)	(64)	(183)	(195)
Comprehensive income attributable to S&P Global Inc.	$ 709	$ 381	$ 2,087	$ 2,618