Income Taxes (Summary of Operating and Capital Loss Carryforwards) (Details) $ in Millions |
Sep. 30, 2020
USD ($)
|
---|---|
U.S. State | |
Operating Loss Carryforwards [Line Items] | |
Operating loss carryforwards | $ 323.2 |
U.S. Federal | |
Operating Loss Carryforwards [Line Items] | |
Capital loss carryforwards | 24.4 |
Foreign | |
Operating Loss Carryforwards [Line Items] | |
Operating loss carryforwards | 236.6 |
Capital loss carryforwards | $ 274.8 |