Commitments and Contingencies (Details) - USD ($)	3 Months Ended
Dec. 31, 2019	Sep. 30, 2020
Affiliate
Commitments and Contingencies
Co-investment commitments in partnership		$ 129,400,000
Equity Method Investee
Commitments and Contingencies
Noncontrolling interest, sell of ownership percentage	5.00%
Minority Owner \| Equity Method Investee
Commitments and Contingencies
Ownership percentage by minority owner		14.00%
Payments for Investment in Affiliate
Commitments and Contingencies
Contingent payments in 2020		$ 35,000,000.0
Contingent payments in 2021		35,000,000.0
Contingent payments in 2022		37,500,000
Payments for Achievement of Financial Targets
Commitments and Contingencies
Contingent payments in 2021		150,000,000.0
Contingent payments in 2022		77,500,000
Contingent payments from 2023 through 2025		62,500,000
Expected payments		53,000,000
Expected payments, remainder of fiscal year		0
Payment contingent on not meeting financial targets (up to)		12,500,000
Payment contingent on exercise of option to reduce ownership percentage		$ 25,000,000.0

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

No definition available.

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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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No definition available.

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- Definition

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

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No definition available.

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- Definition

Other Commitment, Contingent Consideration, Asset

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No definition available.

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- Definition

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

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No definition available.

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- Definition

Other Commitment, Due In Third, Fourth, And Fifth Year

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No definition available.

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- Definition

Other Commitment Expected Payments

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No definition available.

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- Definition

Other Commitment, Expected Payments, Remainder Of Fiscal Year

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No definition available.

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- Definition

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

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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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- Definition

Amount of commitment classified as other to be paid in second 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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- Definition

Amount of commitment classified as other to be paid in remainder of current fiscal year.

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No definition available.

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