Casualty, Environmental and Other Reserves - Balance Sheet Presentation (Details) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
---|---|---|---|---|
Contingencies [Line Items] | ||||
Current | $ 118 | $ 90 | ||
Long-term | 250 | 224 | ||
Total | 368 | 314 | $ 305 | $ 324 |
Casualty | ||||
Contingencies [Line Items] | ||||
Current | 44 | 49 | ||
Long-term | 136 | 147 | ||
Total | 180 | 196 | 187 | 199 |
Personal Injury | ||||
Contingencies [Line Items] | ||||
Current | 37 | 38 | ||
Long-term | 81 | 93 | ||
Total | 118 | 131 | ||
Occupational | ||||
Contingencies [Line Items] | ||||
Current | 7 | 11 | ||
Long-term | 55 | 54 | ||
Total | 62 | 65 | ||
Environmental | ||||
Contingencies [Line Items] | ||||
Current | 37 | 23 | ||
Long-term | 71 | 53 | ||
Total | 108 | 76 | 74 | 80 |
Other | ||||
Contingencies [Line Items] | ||||
Current | 37 | 18 | ||
Long-term | 43 | 24 | ||
Total | $ 80 | $ 42 | $ 44 | $ 45 |