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Investments, Equity Method and Joint Ventures (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investment in S&P/Dow Jones Indices LLC	$ (410.0)	$ 0.0
Schedule of Equity Method Investments [Line Items]
Investment in S&P/Dow Jones Indices LLC	410.0	$ 0.0
S&P/DJI
Equity Method Investments and Joint Ventures [Abstract]
Investment in S&P/Dow Jones Indices LLC	$ (410.0)
Equity Method Investment, Ownership Percentage	27.00%
Investments	$ 1,400.0
Schedule of Equity Method Investments [Line Items]
Investment in S&P/Dow Jones Indices LLC	$ 410.0
Equity Method Investment, Ownership Percentage	27.00%
Investments	$ 1,400.0

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Sum of the carrying amounts as of the balance sheet date of all investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(h))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585

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