Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 1,051	$ 857	$ 2,350	$ 1,666
Other comprehensive income:
Foreign currency translation adjustments	(95)	38	(116)	13
Income tax effect	(22)	7	(27)	2
Foreign currency translation adjustment, net of income tax effect	(117)	45	(143)	15
Pension and other postretirement benefit plans	(4)	(1)	1	20
Income tax effect	1	0	0	(4)
Pension and other postretirement benefit plans, net of income tax effect	(3)	(1)	1	16
Unrealized gain (loss) on cash flow hedges	122	(216)	229	(214)
Income tax effect	(31)	56	(57)	56
Unrealized gain on investment and forward exchange contracts, net of income tax effect	91	(160)	172	(158)
Comprehensive income	1,022	741	2,380	1,539
Less: comprehensive income attributable to nonredeemable noncontrolling interests	(7)	(8)	(12)	(10)
Less: comprehensive income attributable to redeemable noncontrolling interests	(72)	(51)	(131)	(103)
Comprehensive income attributable to S&P Global Inc.	$ 943	$ 682	$ 2,237	$ 1,426