Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Other Assets [Abstract]
Straight line rent receivable	$ 44.3	$ 42.2
Goodwill	23.9	23.9
Prepaid expenses	16.1	12.7
Deferred taxes, net	11.2	9.4
Leasing commissions, net of accumulated amortization of $12.6 and $11.1 at September 30, 2023 and December 31, 2022, respectively	9.6	9.4
Right of use asset, net	8.9	12.2
Other	11.0	13.7
Other Assets	211.7	216.1
Accumulated amortization of leasing commissions	12.6	11.1
Above Market Leases
Other Assets [Abstract]
Above-market leases, net of accumulated amortization of $42.7 and $53.0 at September 30, 2023 and December 31, 2022, respectively	2.7	3.9
Accumulated amortization of above-market leases	42.7	53.0
Furniture and Equipment
Other Assets [Abstract]
Furniture and equipment net of accumulated depreciation of $29.1 and $29.4 at September 30, 2023 and December 31, 2022, respectively	7.4	13.4
Accumulated depreciation of furniture and equipment	29.1	29.4
Interest rate caps and swaps
Other Assets [Abstract]
Interest rate caps and swaps / Hedge assets	49.4	41.0
Hedge assets
Other Assets [Abstract]
Interest rate caps and swaps / Hedge assets	$ 27.2	$ 34.3