Acquisitions and Divestitures - Components of Income From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Combinations [Abstract]
Revenue						$ 139	$ 441
Expenses						110	436
Operating income						29	5
Interest expense, net						0	2
Income before taxes on income						29	3
Provision for taxes on income						11	0
Income from discontinued operations, net of tax					$ 0	18	3
Pre-tax gain on sale from discontinued operations						289	888
Provision for taxes on gain on sale						129	299
Gain on sale of discontinued operations, net of tax					0	160	589
Discontinued operations, net	$ 163	$ 2	$ 6	$ 7	0	178	592
Less: net loss attributable to noncontrolling interests					0	0	(1)
Income from discontinued operations attributable to McGraw Hill Financial, Inc. common shareholders	$ 163	$ 2	$ 6	$ 7	$ 0	$ 178	$ 593