Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	$ 713	$ 693
Weighted-average life of the intangible assets	10 years
Amortization of intangibles	$ 67	48	$ 51
Maximum [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Weighted-average life of the intangible assets	20 years
Dow Jones Index [Member] | Intellectual Property [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	$ 380	380
Dow Jones Index [Member] | Trade Names [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	90	90
S&P Capital IQ and SNL [Member] | Trade Names [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	184
C&C [Member] | Trade Names [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses		164
S&P Dow Jones LLC [Member] | Goldman Sachs Commodity and Broad Market Intellectual Property [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	$ 59	$ 59