Consolidated Statements of Equity - USD ($) $ in Millions		Total	Total SPGI Equity	Common Stock $1 par	Additional Paid-in Capital	Retained Income	Accumulated Other Comprehensive Loss	Less: Treasury Stock	Noncontrolling Interests
Beginning Balance at Dec. 31, 2022		$ 36,477	$ 36,388	$ 415	$ 44,422	$ 17,784	$ (886)	$ (25,347)	$ 89
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	1,389	1,378			1,305	73		11
Dividends (Dividend declared per common share)		(587)	(578)			(578)			(9)
Share repurchases		(1,501)	(1,501)					1,501
Employee stock plans		15	15		(127)			(142)
Change in redemption value of redeemable noncontrolling interests		(237)	(237)			(237)
Adjustment to noncontrolling interest		(2)	(2)		(2)
Other		5	5			5
Ending Balance at Jun. 30, 2023		35,559	35,468	415	44,293	18,279	(813)	(26,706)	91
Beginning Balance at Mar. 31, 2023		36,370	36,275	415	44,329	18,171	(861)	(25,779)	95
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	565	559			511	48		6
Dividends (Dividend declared per common share)		(299)	(290)			(290)			(9)
Share repurchases		(1,001)	(1,001)		(50)			951
Employee stock plans		40	40		16			(24)
Change in redemption value of redeemable noncontrolling interests		(117)	(117)			(117)
Adjustment to noncontrolling interest		(2)	(2)		(2)
Other		3	4			4			(1)
Ending Balance at Jun. 30, 2023		35,559	35,468	415	44,293	18,279	(813)	(26,706)	91
Beginning Balance at Dec. 31, 2023		34,300	34,200	415	44,231	18,728	(763)	(28,411)	100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	1,940	1,926			2,002	(76)		14
Dividends (Dividend declared per common share)		(583)	(572)			(572)			(11)
Share repurchases		(500)	(500)		195			695
Employee stock plans		28	28		(19)			(47)
Change in redemption value of redeemable noncontrolling interests		(203)	(203)			(203)
Other		(12)	2			2			(14)
Ending Balance at Jun. 30, 2024		34,970	34,881	415	44,407	19,957	(839)	(29,059)	89
Beginning Balance at Mar. 31, 2024		34,424	34,327	415	44,295	19,433	(825)	(28,991)	97
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	1,004	998			1,011	(13)		6
Dividends (Dividend declared per common share)		(297)	(286)			(286)			(11)
Share repurchases		0	0		75			75
Employee stock plans		44	44		37			(7)
Change in redemption value of redeemable noncontrolling interests		(202)	(202)			(202)
Other		(3)	0			1	(1)		(3)
Ending Balance at Jun. 30, 2024		$ 34,970	$ 34,881	$ 415	$ 44,407	$ 19,957	$ (839)	$ (29,059)	$ 89

[1] 1Excludes comprehensive income of $68 million and $58 million for the three months ended June 30, 2024 and 2023, respectively, and $138 million and $119 million for the six months ended June 30, 2024 and 2023, respectively, attributable to our redeemable noncontrolling interests.