Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Unrecognized Tax Benefits (Details)

v3.20.1
Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefits, beginning balance $ 1.6 $ 4.8 $ 5.0
Gross change for current year positions 0.0 0.2 0.4
Decreases for prior period positions (0.9) (3.4) (0.6)
Unrecognized tax benefits, ending balance $ 0.7 $ 1.6 $ 4.8