Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended						3 Months Ended	9 Months Ended		12 Months Ended	9 Months Ended
	Sep. 30, 2014 2014 Restructuring Plan	Sep. 30, 2014 2014 Restructuring Plan position	Sep. 30, 2014 2014 Restructuring Plan S&P Ratings	Sep. 30, 2014 2014 Restructuring Plan S&P Capital IQ	Sep. 30, 2014 2014 Restructuring Plan C&C	Sep. 30, 2014 2014 Restructuring Plan C&C McGraw Hill Construction [Member]	Sep. 30, 2014 2014 Restructuring Plan Corporate	Sep. 30, 2014 2014 Restructuring Plan Total	Sep. 30, 2014 2014 Restructuring Plan Total	Sep. 30, 2014 2013 Restructuring Plan	Dec. 31, 2013 2013 Restructuring Plan position	Sep. 30, 2014 2013 Restructuring Plan S&P Ratings	Sep. 30, 2014 2013 Restructuring Plan S&P Capital IQ	Sep. 30, 2014 2013 Restructuring Plan C&C	Sep. 30, 2014 2013 Restructuring Plan C&C McGraw Hill Construction [Member]	Sep. 30, 2014 2013 Restructuring Plan Corporate	Sep. 30, 2014 2013 Restructuring Plan Total	Dec. 31, 2013 2013 Restructuring Plan Total
Restructuring Cost and Reserve [Line Items]
Workforce reduction (in positions)		390									520
Initial Charge Recorded			$ 23	$ 5	$ 15	$ 3	$ 7	$ 50	$ 50			$ 13	$ 10	$ 10	$ 1	$ 16	$ 49
Ending Reserve Balance			23	4	15	2	6	48	48			5	1	2	1	2	10	39
Restructuring charges paid	$ 2									$ 29