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Shareholders' Equity / Partners' Capital - Share Repurchase (Details)	Sep. 30, 2020 USD ($)
Class A common shares/units
Class of Stock [Line Items]
Repurchase of shares, authorized amount	$ 300,000,000.0
Remaining repurchase authorization	265,100,000
Preferred Shares/Units
Class of Stock [Line Items]
Repurchase of shares, authorized amount	250,000,000.0
Remaining repurchase authorization	$ 250,000,000.0

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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