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Other long-term liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
OTHER LONG-TERM LIABILITIES. |
Schedule of other long-term liabilities |
($ millions) |  | Dec 31 2017 |  | Dec 31 2016 |  |
Pensions and other post-retirement benefits (note 24) |  | 1 369 |  | 1 464 |  |
Share-based compensation plans (note 27) |  | 361 |  | 364 |  |
Partnership liability (note 38) |  | 483 |  | — |  |
Deferred revenue |  | 49 |  | 55 |  |
Libya Exploration and Production Sharing Agreement (EPSA) signature bonus(1) |  | 77 |  | 83 |  |
Other |  | 73 |  | 131 |  |
Reclassified to assets held for sale (notes 36 and 37) |  | — |  | (30 | ) |
|  | 2 412 |  | 2 067 |  |
(1) | As part of the 2009 acquisition of Petro-Canada, the company assumed the remaining US$500 million obligation for a signature bonus relating to Petro-Canada's ratification of six EPSAs in Libya. At December 31, 2017, the carrying amount of the Libya EPSAs signature bonus was $79 million (December 31, 2016 – $85 million). The current portion is $2 million (December 31, 2016 – $2 million) and is recorded in Accounts Payable and Accrued Liabilities.

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