Investments - Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details) - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
|
Debt Securities, Available-for-sale [Line Items] | ||
Total other-than-temporary impairments | $ 0.9 | $ 0.0 |
Net realized and unrealized gains on investments | ||
Debt Securities, Available-for-sale [Line Items] | ||
Total other-than-temporary impairments | 0.8 | 0.0 |
Other income (expenses), net | ||
Debt Securities, Available-for-sale [Line Items] | ||
Total other-than-temporary impairments | $ 0.1 | $ 0.0 |