Intangible Assets and Liabilities - Components of intangible assets and liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule of finite lived intangible assets and liabilities
Intangible assets and liabilities, gross	$ 220.6	$ 182.3
Intangible assets and liabilities, accumulated amortization	$ 78.6	64.6
Assets and liabilities, weighted avg. life (years)	8 years 1 month 6 days
Below-market lease intangibles (lessor) | Other liabilities
Schedule of finite lived intangible assets and liabilities
Liabilities gross balance	$ (10.1)	(9.0)
Liabilities accumulated amortization	$ (5.1)	(4.4)
Liabilities, weighted avg. life (years)	7 years 3 months 18 days
Goodwill | Other assets, net
Schedule of finite lived intangible assets and liabilities
Assets gross balance	$ 3.5	3.5
Assets accumulated amortization	0.0	0.0
Credit facility debt issuance costs | Other assets, net
Schedule of finite lived intangible assets and liabilities
Assets gross balance	5.1	5.1
Assets accumulated amortization	$ 3.3	2.0
Assets, weighted avg. life (years)	1 year 4 months 24 days
Above-market lease intangibles (lessor) | Other assets, net
Schedule of finite lived intangible assets and liabilities
Assets gross balance	$ 7.0	4.2
Assets accumulated amortization	$ 2.0	1.6
Assets, weighted avg. life (years)	4 years 8 months 12 days
Customer relationship intangibles (lessor) | Other assets, net
Schedule of finite lived intangible assets and liabilities
Assets gross balance	$ 2.1	4.1
Assets accumulated amortization	$ 0.9	1.7
Assets, weighted avg. life (years)	55 years 10 months 24 days
At-market lease intangibles | At-market lease intangibles
Schedule of finite lived intangible assets and liabilities
Assets gross balance	$ 213.0	174.4
Assets accumulated amortization	$ 77.5	$ 63.7
Assets, weighted avg. life (years)	7 years 10 months 24 days