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Casualty, Environmental and Other Reserves (Tables) | 12 Months Ended
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Dec. 31, 2020
Casualty, Environmental and Other Reserves [Abstract] |
Schedule of Claims Activity | Activity related to casualty, environmental and other reserves is as follows:
| Casualty |  | Environmental |  | Other |  |
(Dollars in Millions) | Reserves |  | Reserves |  | Reserves |  | Total
December 31, 2017 | $ | 228 |  |  | $ | 90 |  |  | $ | 56 |  |  | $ | 374 |
Charged to Expense | 21 |  |  | 10 |  |  | 41 |  |  | 72 |
Payments | (50) |  |  | (20) |  |  | (52) |  |  | (122) |
December 31, 2018 | 199 |  |  | 80 |  |  | 45 |  |  | 324 |
Charged to Expense | 56 |  |  | 17 |  |  | 34 |  |  | 107 |
Payments | (68) |  |  | (23) |  |  | (35) |  |  | (126) |
December 31, 2019 | 187 |  |  | 74 |  |  | 44 |  |  | 305 |
Charged to Expense | 55 |  |  | 20 |  |  | 32 |  |  | 107 |
Payments | (46) |  |  | (18) |  |  | (34) |  |  | (98) |
December 31, 2020 | $ | 196 |  |  | $ | 76 |  |  | $ | 42 |  |  | $ | 314 |
Schedule of Balance Sheet Presentation of Casualty, Environmental and Other Reserves | Casualty, environmental and other reserves are provided for in the consolidated balance sheets as shown in the table below.
| December 2020 |  | December 2019
(Dollars in Millions) | Current |  | Long-term |  | Total |  | Current |  | Long-term |  | Total
Casualty: |  |  |  |  |  |  |  |  |  |  |
Personal Injury | $ | 38 |  |  | $ | 93 |  |  | $ | 131 |  |  | $ | 42 |  |  | $ | 87 |  |  | $ | 129 |
Occupational | 11 |  |  | 54 |  |  | 65 |  |  | 6 |  |  | 52 |  |  | 58 |
Total Casualty | $ | 49 |  |  | $ | 147 |  |  | $ | 196 |  |  | $ | 48 |  |  | $ | 139 |  |  | $ | 187 |
Environmental | 23 |  |  | 53 |  |  | 76 |  |  | 31 |  |  | 43 |  |  | 74 |
Other | 18 |  |  | 24 |  |  | 42 |  |  | 21 |  |  | 23 |  |  | 44 |
Total | $ | 90 |  |  | $ | 224 |  |  | $ | 314 |  |  | $ | 100 |  |  | $ | 205 |  |  | $ | 305 |

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