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DEFERRED AMOUNTS AND OTHER ASSETS (Details) - CAD CAD in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
DEFERRED AMOUNTS AND OTHER ASSETS |  |  |
Regulatory assets | CAD 1,921 | CAD 1,661 |
Long-term portion of derivative assets (Note 24) | 151 | 373 |
Affiliate long-term notes receivable | 270 | 152 |
Contractual receivables | 441 | 432 |
Deferred financing costs | 51 | 52 |
Other | 279 | 490 |
Deferred amounts and other assets | 3,113 | 3,160 |
Deferred amounts subject to amortization | 150 | 141 |
Accumulated amortization of deferred costs | 94 | 80 |
Amortization expense of deferred cost | CAD 20 | CAD 18 | CAD 22

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