Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Indefinite-lived Intangible Assets by Major Class [Line Items]
Other intangible assets	$ 846	$ 846
Weighted-average life of the intangible assets	12 years
Amortization of intangibles	$ 122	122	$ 98
Intellectual Property
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	380	380
Tradenames
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	$ 90	90
Maximum
Indefinite-lived Intangible Assets by Major Class [Line Items]
Weighted-average life of the intangible assets	21 years
Market Intelligence
Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortization of intangibles	$ 75	73	71
Market Intelligence | Tradenames
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	185	185
Indices
Indefinite-lived Intangible Assets by Major Class [Line Items]
Amortization of intangibles	6	6	$ 6
Indices | Intellectual Property
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	132	132
Indices | Goldman Sachs Commodity and Broad Market Intellectual Property
Indefinite-lived Intangible Assets by Major Class [Line Items]
Carrying value of trade name and licenses	$ 59	$ 59