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Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2020	Mar. 31, 2021
Commitments and Contingencies
Co-investment commitments in partnership		$ 127.7
Equity Method Investee
Commitments and Contingencies
Total contingent payments		104.4
Contingent payments in 2022		$ 77.5
Noncontrolling interest, sell of ownership percentage	5.00%
Undisclosed Affiliate | Equity Method Investee
Commitments and Contingencies
Ownership percentage by minority owner		14.00%
Payments for Achievement of Financial Targets
Commitments and Contingencies
Total contingent payments		$ 118.0
Contingent payments in 2022		40.5
Contingent payments from 2023 through 2025		77.5
Expected payments		13.0
Payment contingent on not meeting financial targets (up to)		12.5
Payment contingent on exercise of option to reduce ownership percentage		$ 25.0

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- Definition

-- None. No documentation exists for this element. --

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- Definition

The amount that the entity agreed to co-invest in certain investment partnerships where the entity serves as the general partner.

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+ Details

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- Definition

Noncontrolling Interest, Notification of Possible Sale of Noncontrolling Interest, Percentage

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- Definition

Other Commitment, Contingent Consideration, Asset

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- Definition

Other Commitment, Contingent Consideration, Option To Reduce Ownership Interest, Asset

+ References

No definition available.

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- Definition

Other Commitment, Due In Second, Third, Or Fourth Year

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No definition available.

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- Definition

Other Commitment Expected Payments

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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No definition available.

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- Definition

Amount of commitment classified as other to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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No definition available.

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