Financial Instruments and Fair Value Measurements - Summary of commodity derivatives (Details) bbl in Millions, MWh in Millions, MMBTU in Millions |
Jun. 30, 2025
bbl
MWh
MMBTU
|
Dec. 31, 2024
MWh
bbl
MMBTU
|
|---|---|---|
| Derivatives designated as hedges: | Natural gas | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | MMBTU | 60 | 62 |
| Derivatives designated as hedges: | Ethane | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 14 | 14 |
| Derivatives designated as hedges: | Power | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | MWh | 1 | 0 |
| Derivatives not designated as hedges: | Ethane | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 21 | 0 |
| Derivatives not designated as hedges: | Other commodities | ||
| Derivative [Line Items] | ||
| Derivative, nonmonetary notional amount | 3 | 6 |