SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS - (Details) - Income tax valuation allowance, deducted from deferred tax assets: - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Movement in valuation and qualifying accounts | |||
| Balance at Beginning of Period | $ 139.7 | $ 151.4 | $ 186.0 |
| Charged to Costs and Expenses | 5.7 | (11.7) | (34.6) |
| Balance at End of Period | $ 145.4 | $ 139.7 | $ 151.4 |