Restructuring (Details) (2013 restructuring plan, USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013 position
Restructuring Cost and Reserve [Line Items]
Workforce reduction (in positions)		520
Restructuring charges paid	$ 16
S&P Ratings
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	13
Ending Reserve Balance	11
S&P Capital IQ
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	10
Ending Reserve Balance	2
C&C
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	10
Ending Reserve Balance	4
Corporate
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	16
Ending Reserve Balance	6
Total
Restructuring Cost and Reserve [Line Items]
Initial Charge Recorded	49
Ending Reserve Balance	$ 23	$ 39