XML 152 R118.htm IDEA: XBRL DOCUMENT
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Equity - Additional Information (Detail) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 CAD ($) | Sep. 30, 2018 CAD ($) | Jun. 30, 2018 CAD ($) | Mar. 31, 2018 CAD ($) | Dec. 31, 2017 CAD ($) | Sep. 30, 2017 CAD ($) | Jun. 30, 2017 CAD ($) | Dec. 31, 2018 CAD ($) Vote / shares shares | Dec. 31, 2017 CAD ($) shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Share option, granted |  |  |  |  |  |  |  | 1,575,000 | 2,011,000
Weighted average exercise price | $ |  |  |  |  |  |  |  | $ 37.44 | $ 27.79
Average share price | $ |  |  |  |  |  |  |  | 32.55 | 27.86
Total share option compensation expense | $ |  |  |  |  |  |  |  | $ 17,000,000 | $ 17,000,000
Dilutive shares were not included in the diluted earnings per share | shares |  |  |  |  |  |  |  | 5,458,816 | 4,240,949
Dividends declared and paid per share | $ | $ 0.15 | $ 0.05 | $ 0.05 | $ 0.05 | $ 0.45 | $ 0.05 | $ 0.10 |  |
Deferred share units (DSUs), restricted share units (RSUs), performance share units (PSUs) and performance deferred share units (PDSUs) [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Description of vesting requirements for share-based payment arrangement |  |  |  |  |  |  |  | PSUs granted prior to 2017 vest in a percentage of the original grant varying from 0% to 200% based on our total shareholder return ranking compared to a group of specified companies. PSUs issued in 2018 and 2017 vest in a percentage from 0% to 200% based on both relative total shareholder return and a calculation based on the change in EBITDA over the vesting period divided by the change in a weighted commodity price index. Once vested, PSUs entitle the holder to a cash payment equal to the weighted average trading price of one Class B subordinate voting share on the Toronto Stock Exchange over either 10 or 20 consecutive trading days prior to vesting, depending on the date issued |
Share based compensation expense | $ |  |  |  |  |  |  |  | $ 42,000,000 | $ 108,000,000
Total liability and intrinsic value for vested Units | $ | 103,000,000 |  |  |  | 185,000,000 |  |  | $ 103,000,000 | $ 185,000,000
Top of range [member] | Performance share units (PSUs) [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  | 200.00% | 200.00%
Bottom of range [member] | Performance share units (PSUs) [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Vesting percentage |  |  |  |  |  |  |  | 0.00% | 0.00%
Class A Common Shares [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Number of vote per share | Vote / shares |  |  |  |  |  |  |  | 100 |
Class A share conversion | shares |  |  |  |  |  |  |  | (9,000) | (1,576,000)
Percentage of voting equity interests before conversion |  |  |  |  |  |  |  |  | 62.20%
Percentage of voting equity interests after conversion |  |  |  |  |  |  |  |  | 57.70%
Class B Subordinate Voting Shares [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Number of vote per share | Vote / shares |  |  |  |  |  |  |  | 1 |
Class A share conversion | shares |  |  |  |  |  |  |  | 9,000 | 1,576,000
Purchase of voting shares under normal course issuer bid | shares |  |  |  |  |  |  |  | 6,539,558 |
Shares repurchased, cancelled | shares |  |  |  |  |  |  |  | 6,299,558 |
Shares repurchased, pending for cancellation | shares |  |  |  |  |  |  |  | 240,000 |
Class B Subordinate Voting Shares [member] | Stock Options [member] |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |
Share option, granted | shares |  |  |  |  |  |  |  | 28,000,000 |
Share option, available for grant | shares |  |  |  |  |  |  |  | 3,443,007 |
Share option, granted |  |  |  |  |  |  |  | 1,575,355 |
Weighted average exercise price | $ |  |  |  |  |  |  |  | $ 37.44 |
Share option granted, vesting period |  |  |  |  |  |  |  | 3 years |
Share option granted, term |  |  |  |  |  |  |  | 10 years |
Weighted average fair value of share option | $ | $ 11.10 |  |  |  | $ 8.32 |  |  | $ 11.10 | $ 8.32

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