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, 2021		$ 2,107	$ 2,032	$ 294	$ 1,031	$ 15,017	$ (841)	$ (13,469)	$ 75
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	1,299	1,294			1,235	59		5
Dividends (Dividend declared per common share)		(186)	(186)			(186)
Acquisition of IHS Markit		43,536	43,536	121	43,415
Share repurchases		(7,003)	(7,003)		(1,050)			5,953
Employee stock plans		30	30		49			19
Change in redemption value of redeemable noncontrolling interest		(1)	(1)			(1)
Other		(1)	0						(1)
Ending Balance at Mar. 31, 2022		39,781	39,702	415	43,445	16,065	(782)	(19,441)	79
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 interest		(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

[1] Excludes comprehensive income of $61 million and $59 million for the three months ended March 31, 2023 and 2022, respectively, attributable to our redeemable noncontrolling interest.