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]	824	820			795	25		4
Dividends (Dividend declared per common share)		(287)	(287)			(287)
Share repurchases		(500)	(500)		50			550
Employee stock plans		(25)	(25)		(143)			(118)
Change in redemption value of redeemable noncontrolling interests		(120)	(120)			(120)
Other		1	(1)			(1)			2
Ending Balance at Mar. 31, 2023		36,370	36,275	415	44,329	18,171	(861)	(25,779)	95
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]	936	929			991	(62)		7
Dividends (Dividend declared per common share)		(286)	(286)			(286)
Share repurchases		(500)	(500)		120			620
Employee stock plans		(16)	(16)		(56)			(40)
Change in redemption value of redeemable noncontrolling interests		(1)	(1)			(1)
Other		(9)	1			1			(10)
Ending Balance at Mar. 31, 2024		$ 34,424	$ 34,327	$ 415	$ 44,295	$ 19,433	$ (825)	$ (28,991)	$ 97

[1] Excludes comprehensive income of $70 million and $61 million for the three months ended March 31, 2024 and 2023, respectively, attributable to our redeemable noncontrolling interests.