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Other long-term liabilities (Tables) | 12 Months Ended
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Dec. 31, 2018
OTHER LONG-TERM LIABILITIES. |
Schedule of other long-term liabilities |
($ millions) |  | December 31 2018 |  | December 31 2017 |
Pensions and other post-retirement benefits (note 21) |  | 1 420 |  | 1 369 |
Share-based compensation plans (note 24) |  | 259 |  | 361 |
Partnership liability (note 35) |  | 470 |  | 483 |
Deferred revenue |  | 46 |  | 49 |
Libya Exploration and Production Sharing Agreement (EPSA) signature bonus(1) |  | 83 |  | 77 |
Other |  | 68 |  | 73 |
|  | 2 346 |  | 2 412 |
(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, 2018, the carrying amount of the Libya EPSAs signature bonus was $85 million (December 31, 2017 – $79 million). The current portion is $2 million (December 31, 2017 – $2 million) and is recorded in Accounts Payable and Accrued Liabilities.

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