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Other non-current liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract] |
Disclosure of other non-current liabilities |
FOR THE YEAR ENDED DECEMBER 31 | NOTE |  | 2017 |  | 2016 |
Long-term disability benefits obligation |  | 322 |  | 302 |
Provisions | 21 |  | 273 |  | 273 |
Deferred revenue on long-term contracts |  | 174 |  | 105 |
CRTC deferral account obligation | 24 |  | 96 |  | 104 |
Future tax liabilities |  | 81 |  | 73 |
CRTC tangible benefits obligation | 24 |  | 73 |  | 115 |
Other |  | 204 |  | 305 |
Total other non-current liabilities |  | 1,223 |  | 1,277 |

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