Debt and Short-Term Borrowings - Notes Payable (Details) - Notes Payable $ in Millions	Dec. 31, 2019 USD ($) agreement	Dec. 31, 2018 USD ($)	May 31, 2016 USD ($)
Non-Interest Bearing Financing Agreement One
Debt Instrument [Line Items]
Non interest bearing financing agreement amount			$ 0.7
Notes payable	$ 0.2	$ 0.3
Non-Interest Bearing Financing Agreement Two
Debt Instrument [Line Items]
Non interest bearing financing agreement amount	2.4
Notes payable	$ 2.4
Number of financing arrangements | agreement	2