DEBT - Schedule of Mortgage Notes Payable (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Carrying Value of Collateralized Related Real Estate	$ 3,230.0
Captive mortgages
Debt Instrument [Line Items]
Liabilities associated with assets held for sale		$ 2.7
2018 BofA Real Estate Facility
Debt Instrument [Line Items]
Liabilities associated with assets held for sale		4.1
Mortgages
Debt Instrument [Line Items]
Aggregate Principal Outstanding	971.7	1,070.8
Carrying Value of Collateralized Related Real Estate	1,396.5	1,489.5
Mortgages | Captive mortgages
Debt Instrument [Line Items]
Aggregate Principal Outstanding	31.9	38.3
Carrying Value of Collateralized Related Real Estate	86.3	98.0
Mortgages | 2021 Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	614.4	660.6
Carrying Value of Collateralized Related Real Estate	852.4	864.6
Mortgages | 2021 BofA Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	165.9	173.3
Carrying Value of Collateralized Related Real Estate	198.4	197.3
Mortgages | 2018 BofA Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	50.3	54.5
Carrying Value of Collateralized Related Real Estate	72.7	78.7
Mortgages | 2018 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	72.0	76.9
Carrying Value of Collateralized Related Real Estate	103.6	105.0
Mortgages | 2013 BofA Real Estate Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	0.0	24.9
Carrying Value of Collateralized Related Real Estate	0.0	61.7
Mortgages | 2015 Wells Fargo Master Loan Facility
Debt Instrument [Line Items]
Aggregate Principal Outstanding	37.2	42.3
Carrying Value of Collateralized Related Real Estate	$ 83.1	$ 84.2