Notes Payable and Other Debt - Schedule of Debt Principal Payments (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
2021	$ 43.5
2022	141.1
2023	84.5
2024	156.9
2025	40.2
There- after	221.1
Total Debt (contractual)	687.3	$ 705.2
(Unamort Debt Issue Cost)/ (Discount) Premium	(0.2)
Total debt (carrying value)	687.1	704.6
Secured debt
Debt Instrument [Line Items]
2021	20.4
2022	6.0
2023	5.9
2024	134.9
2025	1.9
There- after	49.0
Total Debt (contractual)	218.1	223.3
(Unamort Debt Issue Cost)/ (Discount) Premium	(0.1)
Total debt (carrying value)	218.0
Unsecured debt
Debt Instrument [Line Items]
2021	23.1
2022	24.1
2023	78.6
2024	22.0
2025	38.3
There- after	172.1
Total Debt (contractual)	358.2	383.2
(Unamort Debt Issue Cost)/ (Discount) Premium	(0.1)
Total debt (carrying value)	358.1
Revolving Credit Facility
Debt Instrument [Line Items]
2021	0.0
2022	111.0
2023	0.0
2024	0.0
2025	0.0
There- after	0.0
Total Debt (contractual)	111.0	$ 98.7
(Unamort Debt Issue Cost)/ (Discount) Premium	0.0
Total debt (carrying value)	$ 111.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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