Debt - Summary of Carrying Amounts and Estimated Fair Values of Long-Term Borrowings (Details) - USD ($) $ in Millions		Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term borrowings		$ 244.6	$ 220.5
Current portion of long-term borrowings and finance lease obligations		0.2	0.2
Notional Amount
Debt Instrument [Line Items]
Long-term borrowings	[1]	244.6	220.5
Fair Value
Debt Instrument [Line Items]
Long-term borrowings	[1]	$ 244.6	$ 220.5

[1] Long-term borrowings includes current finance lease obligations of $0.2 million and $0.2 million as of June 30, 2020 and December 31, 2019, respectively.