Consolidated Statements of Equity Consolidated Statements of Equity (USD $) In Millions, unless otherwise specified		Total	Common Stock $1 par	Additional Paid-in Capital	Retained Income	Accumulated Other Comprehensive Loss	Less: Treasury Stock	Total MHFI Equity	Noncontrolling Interests
Beginning balance at Dec. 31, 2012		$ 840	$ 412	$ 492	$ 6,525	$ (517)	$ 6,145	$ 767	$ 73
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive Income	[1]	1,271			1,204	52		1,256	15
Dividends		(247)			(238)			(238)	(9)
Noncontrolling interest adjustments related to discontinued operations		(22)						0	(22)
Share repurchases		(850.0)					850.0	(850.0)
Employee stock plans, net of tax benefit		244		(65)			(309)	244
Change in redemption value of redeemable noncontrolling interest		9			9			9
Increase in CRISIL ownership		(233)			(216)			(216)	(17)
Other		3			5			5	(2)
Net income attributable to noncontrolling interest		60
Ending balance at Sep. 30, 2013		$ 1,015	$ 412	$ 427	$ 7,289	$ (465)	$ 6,686	$ 977	$ 38

[1] Excludes $60 million attributable to our redeemable noncontrolling interest.