Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Amounts attributable to McGraw Hill Financial, Inc. common shareholders:
Net income	$ 294	$ 303
Basic weighted-average number of common shares outstanding (in shares)	265,000,000	273,500,000
Effect of stock options and other dilutive securities (in shares)	2,200,000	2,800,000
Diluted weighted-average number of common shares outstanding (in shares)	267,200,000	276,300,000
Earnings per share attributable to McGraw Hill Financial, Inc. common shareholders:
Basic (in dollars per share)	$ 1.11	$ 1.11
Diluted (in dollars per share)	$ 1.10	$ 1.10
Restricted performance shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding shares not included in the computation of diluted earnings per share (in shares)	900,000	1,400,000
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Outstanding shares not included in the computation of diluted earnings per share (in shares)		0