Commercial Commitments (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018
Guarantor Obligations [Line Items]
Total commercial commitments	[1]	$ 9.3	$ 11.5
Property Lease Guarantee [Member]
Guarantor Obligations [Line Items]
Total commercial commitments		0.0	2.0
Standby letters of credit [Member]
Guarantor Obligations [Line Items]
Total commercial commitments		$ 9.3	$ 9.5

[1] (1) There were no liabilities recorded on the balance sheet for commercial commitments at December 31, 2019 and December 31, 2018. As of December 31, 2019, our outstanding commitments expire in 2020 through 2021. We are not aware of any event that would require us to satisfy any of our commitments.