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Commitments And Contingencies (Tables) | 3 Months Ended
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Mar. 31, 2020
Commitments And Contingencies [Abstract] |
Commitments And Contingencies Activity | Our personal injury liability activity was as follows:
Millions, |  |  |  |
for the Three Months Ended March 31, | 2020 | 2019
Beginning balance | $ | 265 | $ | 271
Current year accruals |  | 18 |  | 18
Changes in estimates for prior years |  | 2 |  | (2)
Payments |  | (15) |  | (21)
Ending balance at March 31 | $ | 270 | $ | 266
Current portion, ending balance at March 31 | $ | 62 | $ | 67
Commitments And Contingencies Activity. | Our environmental liability activity was as follows:
Millions, |  |  |  |
for the Three Months Ended March 31, | 2020 | 2019
Beginning balance | $ | 227 | $ | 223
Accruals |  | 15 |  | 10
Payments |  | (16) |  | (17)
Ending balance at March 31 | $ | 226 | $ | 216
Current portion, ending balance at March 31 | $ | 64 | $ | 63

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