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SHARE CAPITAL (Tables) | 12 Months Ended
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Dec. 31, 2018
Equity [Abstract] |
Schedule of common shares | COMMON SHARES
| 2018 | 2017 | 2016
| Number |  |  | Number |  |  | Number |  |
December 31, | of Shares |  | Amount |  | of Shares |  | Amount |  | of Shares |  | Amount |
(millions of Canadian dollars; number of shares in millions) |  |  |  |  |  |
Balance at beginning of year | 1,695 |  | 50,737 |  | 943 |  | 10,492 |  | 868 |  | 7,391 |
Common shares issued 1 | — |  | — |  | 33 |  | 1,500 |  | 56 |  | 2,241 |
Common shares issued in Merger Transaction (Note 8) | — |  | — |  | 691 |  | 37,429 |  | — |  | — |
Common shares issued in Sponsored Vehicle buy-in (SEP) (Note 20) | 91 |  | 3,888 |  | — |  | — |  | — |  | — |
Common shares issued in Sponsored Vehicle buy-in (EEP) (Note 20) | 72 |  | 3,042 |  | — |  | — |  | — |  | — |
Common shares issued in Sponsored Vehicle buy-in (EEM) (Note 20) | 30 |  | 1,267 |  | — |  | — |  | — |  | — |
Common shares issued in Sponsored Vehicle buy-in (ENF) (Note 20) | 104 |  | 4,530 |  | — |  | — |  | — |  | — |
Dividend Reinvestment and Share Purchase Plan | 28 |  | 1,181 |  | 25 |  | 1,226 |  | 16 |  | 795 |
Shares issued on exercise of stock options | 2 |  | 32 |  | 3 |  | 90 |  | 3 |  | 65 |
Balance at end of year | 2,022 |  | 64,677 |  | 1,695 |  | 50,737 |  | 943 |  | 10,492 |
1 Gross proceeds of nil, $1.5 billion and $2.3 billion for the years ended December 31, 2018, 2017 and 2016, respectively; net issuance costs of nil, nil and $59 million for the years ended December 31, 2018, 2017 and 2016, respectively.
Schedule of preference shares | PREFERENCE SHARES
| 2018 | 2017 | 2016
| Number |  |  | Number |  |  | Number |  |
December 31, | of Shares |  | Amount |  | of Shares |  | Amount |  | of Shares |  | Amount |
(millions of Canadian dollars; number of shares in millions) |  |  |  |  |  |
Preference Shares, Series A | 5 |  | 125 |  | 5 |  | 125 |  | 5 |  | 125 |
Preference Shares, Series B | 18 |  | 457 |  | 18 |  | 457 |  | 20 |  | 500 |
Preference Shares, Series C | 2 |  | 43 |  | 2 |  | 43 |  | — |  | — |
Preference Shares, Series D | 18 |  | 450 |  | 18 |  | 450 |  | 18 |  | 450 |
Preference Shares, Series F | 20 |  | 500 |  | 20 |  | 500 |  | 20 |  | 500 |
Preference Shares, Series H | 14 |  | 350 |  | 14 |  | 350 |  | 14 |  | 350 |
Preference Shares, Series J | 8 |  | 199 |  | 8 |  | 199 |  | 8 |  | 199 |
Preference Shares, Series L | 16 |  | 411 |  | 16 |  | 411 |  | 16 |  | 411 |
Preference Shares, Series N | 18 |  | 450 |  | 18 |  | 450 |  | 18 |  | 450 |
Preference Shares, Series P | 16 |  | 400 |  | 16 |  | 400 |  | 16 |  | 400 |
Preference Shares, Series R | 16 |  | 400 |  | 16 |  | 400 |  | 16 |  | 400 |
Preference Shares, Series 1 | 16 |  | 411 |  | 16 |  | 411 |  | 16 |  | 411 |
Preference Shares, Series 3 | 24 |  | 600 |  | 24 |  | 600 |  | 24 |  | 600 |
Preference Shares, Series 5 | 8 |  | 206 |  | 8 |  | 206 |  | 8 |  | 206 |
Preference Shares, Series 7 | 10 |  | 250 |  | 10 |  | 250 |  | 10 |  | 250 |
Preference Shares, Series 9 | 11 |  | 275 |  | 11 |  | 275 |  | 11 |  | 275 |
Preference Shares, Series 11 | 20 |  | 500 |  | 20 |  | 500 |  | 20 |  | 500 |
Preference Shares, Series 13 | 14 |  | 350 |  | 14 |  | 350 |  | 14 |  | 350 |
Preference Shares, Series 15 | 11 |  | 275 |  | 11 |  | 275 |  | 11 |  | 275 |
Preference Shares, Series 17 | 30 |  | 750 |  | 30 |  | 750 |  | 30 |  | 750 |
Preference Shares, Series 19 | 20 |  | 500 |  | 20 |  | 500 |  | — |  | — |
Issuance costs |  | (155 | ) |  | (155 | ) |  | (147 | )
Balance at end of year |  |  | 7,747 |  |  | 7,747 |  |  | 7,255 |
Schedule of characteristics of preference shares | Characteristics of the preference shares are as follows:
| Dividend Rate |  | Dividend 1 |  | Per Share Base Redemption Value 2 | Redemption and Conversion Option Date 2,3 |  | Right to Convert Into 3,4 |
(Canadian dollars unless otherwise stated) |  |  |  |
Preference Shares, Series A | 5.50 | % | $1.37500 | $25 | — |  | — |
Preference Shares, Series B | 3.42 | % | $0.85360 | $25 | June 1, 2022 |  | Series C |
Preference Shares, Series C 5 | 3-month treasury bill plus 2.40% |  | — |  | $25 | June 1, 2022 |  | Series B |
Preference Shares, Series D 6 | 4.46 | % | $1.11500 | $25 | March 1, 2023 |  | Series E |
Preference Shares, Series F 6 | 4.69 | % | $1.17225 | $25 | June 1, 2023 |  | Series G |
Preference Shares, Series H 6 | 4.38 | % | $1.09400 | $25 | September 1, 2023 |  | Series I |
Preference Shares, Series J | 4.89 | % | US$1.22160 | US$25 | June 1, 2022 |  | Series K |
Preference Shares, Series L | 4.96 | % | US$1.23972 | US$25 | September 1, 2022 |  | Series M |
Preference Shares, Series N 6 | 5.09 | % | $1.27150 | $25 | December 1, 2023 |  | Series O |
Preference Shares, Series P | 4.00 | % | $1.00000 | $25 | March 1, 2019 |  | Series Q |
Preference Shares, Series R | 4.00 | % | $1.00000 | $25 | June 1, 2019 |  | Series S |
Preference Shares, Series 1 6 | 5.95 | % | US$1.48728 | US$25 | June 1, 2023 |  | Series 2 |
Preference Shares, Series 3 | 4.00 | % | $1.00000 | $25 | September 1, 2019 |  | Series 4 |
Preference Shares, Series 5 | 4.40 | % | US$1.10000 | US$25 | March 1, 2019 |  | Series 6 |
Preference Shares, Series 7 | 4.40 | % | $1.10000 | $25 | March 1, 2019 |  | Series 8 |
Preference Shares, Series 9 | 4.40 | % | $1.10000 | $25 | December 1, 2019 |  | Series 10 |
Preference Shares, Series 11 | 4.40 | % | $1.10000 | $25 | March 1, 2020 |  | Series 12 |
Preference Shares, Series 13 | 4.40 | % | $1.10000 | $25 | June 1, 2020 |  | Series 14 |
Preference Shares, Series 15 | 4.40 | % | $1.10000 | $25 | September 1, 2020 |  | Series 16 |
Preference Shares, Series 17 | 5.15 | % | $1.28750 | $25 | March 1, 2022 |  | Series 18 |
Preference Shares, Series 19 | 4.90 | % | $1.22500 | $25 | March 1, 2023 |  | Series 20 |
1 | The holder is entitled to receive a fixed, cumulative, quarterly preferential dividend, as declared by the Board of Directors. With the exception of Series A and Series C Preference Shares, such fixed dividend rate resets every five years beginning on the initial redemption and conversion option date. The Series 17 and Series 19 Preference Shares contain a feature where the fixed dividend rate, when reset every five years, will not be less than 5.15% and 4.90%, respectively. No other series of Preference Shares has this feature.
2 | Series A Preference Shares may be redeemed any time at our option. For all other series of Preference Shares, we, may at our option, redeem all or a portion of the outstanding Preference Shares for the Base Redemption Value per share plus all accrued and unpaid dividends on the Redemption Option Date and on every fifth anniversary thereafter.
3 | The holder will have the right, subject to certain conditions, to convert their shares into Cumulative Redeemable Preference Shares of a specified series on a one-for-one basis on the Conversion Option Date and every fifth anniversary thereafter at an ascribed issue price equal to the Base Redemption Value.
4 | With the exception of Series A Preference Shares, after the redemption and conversion option dates, holders may elect to receive quarterly floating rate cumulative dividends per share at a rate equal to: $25 x (number of days in quarter/365) x 90 day Government of Canada treasury bill rate + 2.4% (Series C), 2.4% (Series E), 2.5% (Series G), 2.1% (Series I), 2.7% (Series O), 2.5% (Series Q), 2.5% (Series S), 2.4% (Series 4), 2.6% (Series 8), 2.7% (Series 10), 2.6% (Series 12), 2.7% (Series 14), 2.7% (Series 16), 4.1% (Series 18) or 3.2% (Series 20); or US$25 x (number of days in quarter/365) x three-month United States Government treasury bill rate + 3.1% (Series K), 3.2% (Series M), 3.1% (Series 2) or 2.8% (Series 6).
5 | The floating quarterly dividend amount for the Series C Preference Shares was increased to $0.22685 from $0.20342 on March 1, 2018, was increased to $0.22748 from $0.22685 on June 1, 2018, was increased to $0.23934 from $0.22748 on September 1, 2018 and was increased to $0.25459 from $0.23934 on December 1, 2018, due to reset on a quarterly basis following the issuance thereof.
6 | No Series D, F, H, N, or 1 Preference shares were converted on the March 1, 2018, June 1, 2018, September 1, 2018, December 1, 2018 or June 1, 2018 conversion option dates, respectively. However, the quarterly dividend amounts for Series D, F, H, N, and 1, were increased to $0.27875 from $0.25000 on March 1, 2018, $0.29306 from $0.25000 on June 1, 2018, $0.27350 from $0.25000 on September 1, 2018, $0.31788 from $0.25000 on December 1, 2018 and US$0.37182 from US$0.25000 on June 1, 2018, respectively, due to reset on every fifth anniversary thereafter.

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