Our personal injury liability activity was as follows: | Millions | 2014 | 2013 | 2012 | | Beginning balance | $ | 294 | $ | 334 | $ | 368 | | Current year accruals | | 96 | | 87 | | 121 | | Changes in estimates for prior years | | 9 | | (38) | | (58) | | Payments | | (64) | | (89) | | (97) | | Ending balance at December 31 | $ | 335 | $ | 294 | $ | 334 | | Current portion, ending balance at December 31 | $ | 111 | $ | 82 | $ | 95 |
Our asbestos-related liability activity was as follows: | Millions | 2014 | 2013 | 2012 | | Beginning balance | $ | 131 | $ | 139 | $ | 147 | | Accruals/(Credits) | | 1 | | 2 | | (2) | | Payments | | (6) | | (10) | | (6) | | Ending balance at December 31 | $ | 126 | $ | 131 | $ | 139 | | Current portion, ending balance at December 31 | $ | 8 | $ | 9 | $ | 8 |
Our environmental liability activity was as follows: | Millions | 2014 | 2013 | 2012 | | Beginning balance | $ | 171 | $ | 170 | $ | 172 | | Accruals | | 56 | | 58 | | 48 | | Payments | | (45) | | (57) | | (50) | | Ending balance at December 31 | $ | 182 | $ | 171 | $ | 170 | | Current portion, ending balance at December 31 | $ | 60 | $ | 53 | $ | 50 | | | | | | | | |
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