Note 17. Other Liabilities
| Years Ended | |||||||
| December 31, | |||||||
| 2013 | 2012 | ||||||
| Pension and other employee related | $ | 1,756 | $ | 4,440 | |||
| Environmental | 339 | 350 | |||||
| Income taxes | 952 | 550 | |||||
| Insurance | 241 | 273 | |||||
| Asset retirement obligations(1) | 68 | 71 | |||||
| Deferred income | 44 | 47 | |||||
| Other | 334 | 182 | |||||
| $ | 3,734 | $ | 5,913 | ||||
| (1) Asset retirement obligations primarily relate to costs associated with the future retirement of nuclear fuel conversion facilities in our Performance Materials and Technologies segment and the future retirement of facilities in our Automation and Control Solutions segment. | |||||||
A reconciliation of our liability for asset retirement obligations for the year ended December 31, 2013, is as follows:
| 2013 | 2012 | ||||||
| Change in asset retirement obligations: | |||||||
| Balance at beginning of year | $ | 71 | $ | 74 | |||
| Liabilities settled | (5) | (8) | |||||
| Adjustments | - | 3 | |||||
| Accretion expense | 2 | 2 | |||||
| Balance at end of year | $ | 68 | $ | 71 | |||