Consolidated Statement of Equity (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) $ in Millions		Total	Common Stock $1 par	Additional Paid-in Capital	Retained Income	Accumulated Other Comprehensive Loss	Less: Treasury Stock	Total SPGI Equity	Noncontrolling Interests
Balance as of December 31, 2015 at Dec. 31, 2015		$ 243	$ 412	$ 475	$ 7,636	$ (600)	$ 7,729	$ 194	$ 49
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	[1]	655			677	(27)		650	5
Dividends		(197)			(191)			(191)	(6)
Share repurchases		(346)					347	(347)	1
Employee stock plans, net of tax benefit		69		(31)			(100)	69
Change in redemption value of redeemable noncontrolling interest		1			1			1
Balance as of June 30, 2016 at Jun. 30, 2016		425	$ 412	$ 444	$ 8,123	$ (627)	$ 7,976	$ 376	$ 49
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to noncontrolling interest		$ 53

[1] Excludes $53 million attributable to our redeemable noncontrolling interest.