Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 575	$ 1,051	$ 1,435	$ 2,350
Other comprehensive income:
Foreign currency translation adjustments	30	(95)	73	(116)
Income tax effect	5	(22)	8	(27)
Foreign currency translation adjustment, net of income tax effect	35	(117)	81	(143)
Pension and other postretirement benefit plans	(12)	(4)	(12)	1
Income tax effect	3	1	4	0
Pension and other postretirement benefit plans, net of income tax effect	(9)	(3)	(8)	1
Unrealized gain on cash flow hedges	28	122	0	229
Income tax effect	(6)	(31)	0	(57)
Unrealized gain on investment and forward exchange contracts, net of income tax effect	22	91	0	172
Comprehensive income	623	1,022	1,508	2,380
Less: comprehensive income attributable to nonredeemable noncontrolling interests	(6)	(7)	(11)	(12)
Less: comprehensive income attributable to redeemable noncontrolling interests	(58)	(72)	(119)	(131)
Comprehensive income attributable to S&P Global Inc.	$ 559	$ 943	$ 1,378	$ 2,237