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RELATED PARTY TRANSACTIONS (Details) - Joint ventures related to affiliated real estate investments - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
RELATED PARTY TRANSACTIONS
Management fees	$ 0.9	$ 1.2
Amounts due to the Company from related parties	11.5		$ 10.5
Mortgage loans receivable from consolidated joint ventures	5.0		$ 3.1
Ventures
RELATED PARTY TRANSACTIONS
Acquisition fees	$ 0.7	$ 0.0

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