2013 | 2012 | 2011 | |||||||||
Balance at beginning of year | $ | 1,222 | $ | 1,453 | $ | 1,422 | |||||
Accretion expensea | 79 | 80 | 88 | ||||||||
Additions | 73 | 70 | 132 | ||||||||
Reductionsb | (77 | ) | (182 | ) | (68 | ) | |||||
Spending | (130 | ) | (199 | ) | (121 | ) | |||||
Balance at end of year | 1,167 | 1,222 | 1,453 | ||||||||
Less current portion | (121 | ) | (186 | ) | (205 | ) | |||||
Long-term portion | $ | 1,046 | $ | 1,036 | $ | 1,248 | |||||
a. | Represented accretion of the fair value of environmental obligations assumed in the 2007 acquisition of FMC, which were determined on a discounted cash flow basis. |
b. | Reductions primarily reflected revisions for changes in the anticipated scope and timing of environmental remediation projects and the noncash adjustments of environmental matters. |