Intangible Assets - Schedule of Gross Carrying Amount of Intangible Assets and Accumulated Amortization (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	$ 30.0	$ 6.5
Accumulated amortization	(3.7)	(3.5)
Net carrying amount	26.3	3.0
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	25.9	5.4
Accumulated amortization	(3.1)	(2.8)
Net carrying amount	22.8	2.6
Non-compete Agreements
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	0.8	0.4
Accumulated amortization	(0.1)	(0.3)
Net carrying amount	0.7	0.1
Tradenames
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	1.6	0.7
Accumulated amortization	(0.4)	(0.4)
Net carrying amount	1.2	$ 0.3
Favorable Market Rent
Finite Lived Intangible Assets [Line Items]
Gross carrying amount	1.7
Accumulated amortization	(0.1)
Net carrying amount	$ 1.6