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Investments In Unconsolidated Subsidiaries - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	50.00%
Gain on deconsolidation	$ 187,456	$ 0	$ 0
Industrious
Schedule of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	40.00%	40.00%
Altus Power
Schedule of Equity Method Investments [Line Items]
Equity method investments in unconsolidated subsidiaries, variations in ownership percentage	14.30%
Gain on deconsolidation	$ 187,500
Investment management | Real Estate Investments
Schedule of Equity Method Investments [Line Items]
Revenue from Related Parties	$ 213,500	$ 145,900	$ 97,000

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Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer.

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