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other comprehensive income (Tables) | 12 Months Ended
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Dec. 31, 2018
other comprehensive income |
Schedule of other comprehensive income |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Item never |  |  |  |  |  |  |  |  |
|  | Items that may subsequently be reclassified to income |  | reclassified |  |  |  |  | Item never |  |
|  | Change in unrealized fair value of derivatives designated as cash flow hedges in current period (Note 4(i)) |  |  |  | to income |  |  |  |  | reclassified |  |
|  | Derivatives used to manage currency risk |  | Derivatives used to manage other market risks |  |  |  |  | Cumulative |  | Change in |  |  |  |  | to income |  |
|  |  |  |  | Prior period |  |  |  |  |  |  |  | Prior period |  |  |  |  |  |  |  | foreign |  | measurement |  |  |  |  | Employee |  |
|  | Gains |  | (gains) losses |  |  |  |  | Gains |  | (gains) losses |  |  |  |  |  |  |  | currency |  | of investment |  | Accumulated |  | defined benefit |  |  |
|  | (losses) |  | transferred to |  |  |  |  | (losses) |  | transferred to |  |  |  |  |  |  |  | translation |  | financial |  | other |  | plan re- |  | Other
(millions) |  | arising |  | net income |  | Total |  | arising |  | net income |  | Total |  | Total |  | adjustment |  | assets |  | comp. income |  | measurements |  | comp. income
Accumulated balance as at January 1, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As previously reported |  |  |  |  |  |  |  | $ | (22) |  |  |  |  |  |  |  | $ | 2 |  | $ | (20) |  | $ | 48 |  | $ | 16 |  | $ | 44 |  |  |  |  |  |
IFRS 9, Financial Instruments transitional amount (Note 2(a)) |  |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  |  | — |  |  | — |  |  | — |  |  | (3) |  |  | (3) |  |  |  |  |  |
As adjusted |  |  |  |  |  |  |  |  | (22) |  |  |  |  |  |  |  |  | 2 |  |  | (20) |  |  | 48 |  |  | 13 |  |  | 41 |  |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount arising |  | $ | (132) |  | $ | 151 |  |  | 19 |  | $ | 24 |  | $ | (17) |  |  | 7 |  |  | 26 |  |  | 5 |  |  | (14) |  |  | 17 |  | $ | (234) |  | $ | (217)
Income taxes |  | $ | (21) |  | $ | 27 |  |  | 6 |  | $ | 6 |  | $ | (5) |  |  | 1 |  |  | 7 |  |  | — |  |  | (2) |  |  | 5 |  |  | (62) |  |  | (57)
Net |  |  |  |  |  |  |  |  | 13 |  |  |  |  |  |  |  |  | 6 |  |  | 19 |  |  | 5 |  |  | (12) |  |  | 12 |  | $ | (172) |  | $ | (160)
Accumulated balance as at December 31, 2017 |  |  |  |  |  |  |  | $ | (9) |  |  |  |  |  |  |  | $ | 8 |  | $ | (1) |  | $ | 53 |  | $ | 1 |  | $ | 53 |  |  | — |  |  | —
Accumulated balance as at January 1, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
As previously reported |  |  |  |  |  |  |  | $ | (9) |  |  |  |  |  |  |  | $ | 8 |  | $ | (1) |  | $ | 53 |  | $ | 5 |  | $ | 57 |  |  |  |  |  |
IFRS 9, Financial Instruments transitional amount (Note 2(a)) |  |  |  |  |  |  |  |  | — |  |  |  |  |  |  |  |  | — |  |  | — |  |  | — |  |  | (4) |  |  | (4) |  |  |  |  |  |
As adjusted |  |  |  |  |  |  |  |  | (9) |  |  |  |  |  |  |  |  | 8 |  |  | (1) |  |  | 53 |  |  | 1 |  |  | 53 |  |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount arising |  | $ | 233 |  | $ | (247) |  |  | (14) |  | $ | (8) |  | $ | (2) |  |  | (10) |  |  | (24) |  |  | (30) |  |  | (1) |  |  | (55) |  | $ | 452 |  | $ | 397
Income taxes |  | $ | 40 |  | $ | (44) |  |  | (4) |  | $ | (2) |  | $ | — |  |  | (2) |  |  | (6) |  |  | — |  |  | — |  |  | (6) |  |  | 119 |  |  | 113
Net |  |  |  |  |  |  |  |  | (10) |  |  |  |  |  |  |  |  | (8) |  |  | (18) |  |  | (30) |  |  | (1) |  |  | (49) |  | $ | 333 |  | $ | 284
Accumulated balance as at December 31, 2018 |  |  |  |  |  |  |  | $ | (19) |  |  |  |  |  |  |  | $ | — |  | $ | (19) |  | $ | 23 |  | $ | — |  | $ | 4 |  |  |  |  |  |
Attributable to: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 12 |  |  |  |  |  |
Non-controlling interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (8) |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 4 |  |  |  |  |  |

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