Subsequent Events (Details) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2023
USD ($)
GWh
|
Dec. 31, 2022
USD ($)
|
Dec. 31, 2021
USD ($)
|
|
| Equity Method Investment | $ 1,073.6 | $ 1,276.7 | $ 1,447.5 |
| Equity Method Investment, Ownership Percentage | 50.00% | ||
| Generation and Marketing [Member] | |||
| Equity Method Investment | $ 100.6 | $ 337.6 | $ 487.8 |
| Competitive Contracted Renewables | Generation and Marketing [Member] | |||
| Contracted Renewables GWs | GWh | 1.4 | ||
| Competitive Contracted Renewables NBV | $ 1,200.0 | ||
| Equity Method Investment | 247.0 | ||
| Proceeds from Sales of Assets | $ 1,200.0 | ||
| Equity Method Investment, Ownership Percentage | 50.00% | ||
| Subsequent Event [Member] | Competitive Contracted Renewables | Generation and Marketing [Member] | |||
| Enterprise Value | $ 1,500.0 | ||
| Indemnification | 70.0 | ||
| Proceeds from Sales of Assets | 1,200.0 | ||
| Anticipated Pretax Loss Range Lower | 175.0 | ||
| Anticipated Pretax Loss Range Upper | 225.0 | ||
| Anticipated After Tax Loss Range Lower | 100.0 | ||
| Anticipated After Tax Loss Range Upper | $ 150.0 |