18. Other liabilities
| 2012 | 2011 | ||
|---|---|---|---|
| BPLP | |||
| Accrued pension and post-retirement benefit liability [note 28] | 554,532 | 468,363 | |
| Derivatives [note 29] | 8,294 | 19,439 | |
| Other | 7,584 | 4,045 | |
| Derivatives [note 29] | 1,954 | 27,194 | |
| Accrued pension and post-retirement benefit liability [note 28] | 30,648 | 38,050 | |
| Other | 7,740 | 6,624 | |
| 620,572 | 577,454 | ||
| Less current portion | (21,144) | (50,495) | |
| Net | $599,428 | $526,959 |