ENVIRONMENTAL LIABILITIES AND EXPENDITURES - Remediation Site Balances (Details) $ in Millions |
Jun. 30, 2026
USD ($)
site
|
Dec. 31, 2025
USD ($)
|
|---|---|---|
| Environmental Exit Cost [Line Items] | ||
| Number of Sites | site | 149 | |
| Remediation Balance | $ | $ 1,853 | $ 1,870 |
| NPL Sites | ||
| Environmental Exit Cost [Line Items] | ||
| Number of Sites | site | 29 | |
| Remediation Balance | $ | $ 1,367 | |
| Third-Party Sites | ||
| Environmental Exit Cost [Line Items] | ||
| Number of Sites | site | 68 | |
| Remediation Balance | $ | $ 247 | |
| Currently Operated Sites | ||
| Environmental Exit Cost [Line Items] | ||
| Number of Sites | site | 3 | |
| Remediation Balance | $ | $ 25 | |
| Closed or Non-operated Sites | ||
| Environmental Exit Cost [Line Items] | ||
| Number of Sites | site | 49 | |
| Remediation Balance | $ | $ 214 |