Borrowing Facilities (Maturities of Long-Term Debt And Capital Lease Obligations) (Details) $ in Millions	Dec. 31, 2019 USD ($)
Debt Disclosure [Abstract]
Aggregate maturies of long-term debt and capital lease obligations in 2020	$ 7.5
Aggregate maturies of long-term debt and capital lease obligations in 2021	7.5
Aggregate maturies of long-term debt and capital lease obligations in 2022	7.5
Aggregate maturies of long-term debt and capital lease obligations in 2023	$ 121.9