Consolidated Statements of Equity (Unaudited) - 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, 2020		$ 571	$ 509	$ 294	$ 946	$ 13,367	$ (637)	$ (13,461)	$ 62
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	746	744			755	(11)		2
Dividends (Dividend declared per common share — $0.77 per share)		(186)	(186)			(186)
Employee stock plans		(19)	(19)		(11)			8
Change in redemption value of redeemable noncontrolling interest		(16)	(16)			(16)
Other		2	0						2
Ending Balance at Mar. 31, 2021		1,098	1,032	294	935	13,920	(648)	(13,469)	66
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				59		5
Dividends (Dividend declared per common share — $0.77 per 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

[1] Excludes comprehensive income of $59 million and $51 million for the three months ended March 31, 2022 and 2021, respectively, attributable to our redeemable noncontrolling interest.