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Affiliate Equity - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Affiliate Equity [Line Items]
Distributions paid to affiliate partners	$ 334.3	$ 306.3	$ 347.9
Affiliate equity purchases	150.5	315.1	146.0
Affiliate equity issuances	117.7	20.2	$ 10.5
Co-Investor
Affiliate Equity [Line Items]
Affiliate equity issuances	99.6
Other Assets
Affiliate Equity [Line Items]
Due from affiliates	9.0	9.6
Other Liabilities
Affiliate Equity [Line Items]
Due to affiliates	$ 12.6	$ 22.0

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[Line Items] for Affiliate Equity [Table]

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For an unclassified balance sheet, amount of receivables due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

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Amount of cash outflow in the form of ordinary dividends provided by the non-wholly owned subsidiary to noncontrolling interests.

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