Commitments and Contingencies (Pace, Piedmont, Pasadena - Narrative) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|
Mar. 31, 2020 |
Sep. 30, 2012 |
Sep. 30, 2008 |
Sep. 30, 2006 |
Mar. 31, 2022 |
|
Pace, Florida | |||||
Loss Contingencies [Line Items] | |||||
Accrual for environmental loss contingencies | $ 42.0 | $ 38.7 | |||
Change in estimated exposure | $ 19.0 | ||||
Pace, Florida | Discontinued operations | |||||
Loss Contingencies [Line Items] | |||||
Pretax environmental expense | $ 19.0 | $ 42.0 | |||
Piedmont, South Carolina | |||||
Loss Contingencies [Line Items] | |||||
Accrual for environmental loss contingencies | $ 24.0 | 8.9 | |||
Piedmont, South Carolina | Discontinued operations | |||||
Loss Contingencies [Line Items] | |||||
Pretax environmental expense | $ 24.0 | ||||
Pasadena, Texas | |||||
Loss Contingencies [Line Items] | |||||
Accrual for environmental loss contingencies | $ 11.0 | ||||
Total anticipated exposure | $ 13.0 |