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SHARE BASED COMPENSATION (Tables) | 12 Months Ended
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Dec. 31, 2020
SHARE BASED COMPENSATION |
Schedule of share-based compensation expense |
($ millions) |  | 2020 |  | 2019 |
Equity-settled plans |  | 32 |  | 50 |
Cash-settled plans |  | (28 | ) | 274 |
Total share-based compensation expense |  | 4 |  | 324 |
Summary of liability recognized for share-based compensation |
($ millions) |  | December 31 2020 |  | December 31 2019 |
Current liability |  | 117 |  | 242 |
Long-term liability (note 22) |  | 143 |  | 289 |
Total Liability |  | 260 |  | 531 |
Schedule of weighted average fair value of options granted during the period and the weighted average assumptions used in their determination |
|  | 2020 |  | 2019 |
Annual dividend per share (dollars) |  | 1.10 |  | 1.68 |
Risk-free interest rate |  | 1.35% |  | 1.78% |
Expected life |  | 5 years |  | 5 years |
Expected volatility |  | 24% |  | 26% |
Weighted average fair value per option (dollars) |  | 4.51 |  | 6.61 |
Summary of stock option plans |
|  | 2020 |  | 2019 |
|  | Number (thousands) |  | Weighted Average Exercise Price ($) |  | Number (thousands) |  | Weighted Average Exercise Price ($) |
Outstanding, beginning of year |  | 33 882 |  | 39.70 |  | 28 935 |  | 38.25 |
Granted |  | 6 341 |  | 38.95 |  | 7 756 |  | 42.96 |
Exercised as options for common shares |  | (804 | ) | 35.73 |  | (2 688 | ) | 33.37 |
Forfeited/expired |  | (1 046 | ) | 39.91 |  | (121 | ) | 42.57 |
Outstanding, end of year |  | 38 373 |  | 39.65 |  | 33 882 |  | 39.70 |
Exercisable, end of year |  | 26 943 |  | 39.10 |  | 21 535 |  | 37.86 |
Schedule of exercise price ranges and weighted average remaining contractual lives |
|  | Outstanding |  | Exercisable |
Exercise Prices ($) |  | Number (thousands) |  | Weighted Average Remaining Contractual Life (years) |  | Weighted Average Exercise Price ($) |  | Number (thousands) |  | Weighted Average Exercise Price ($) |
23.28-24.99 |  | 51 |  | 6 |  | 23.28 |  | — |  | — |
30.00-34.99 |  | 5 130 |  | 2 |  | 30.23 |  | 5 130 |  | 30.23 |
35.00-39.99 |  | 12 484 |  | 3 |  | 38.40 |  | 6 663 |  | 37.82 |
40.00-44.99 |  | 20 527 |  | 4 |  | 42.71 |  | 15 030 |  | 42.60 |
45.00-49.99 |  | 53 |  | 5 |  | 48.06 |  | 35 |  | 48.07 |
50.00-54.27 |  | 128 |  | 5 |  | 52.39 |  | 85 |  | 52.39 |
Total |  | 38 373 |  | 4 |  | 39.65 |  | 26 943 |  | 39.10 |
Summary of common shares available for granting future options |
(thousands) |  | 2020 |  | 2019 |
|  | 8 999 |  | 14 295 |
Summary of share units and stock appreciation rights |
(thousands) |  | PSU |  | RSU |  | DSU |  |
Outstanding, December 31, 2018 |  | 2 197 |  | 14 592 |  | 1 305 |  |
| Granted |  | 1 212 |  | 4 861 |  | 200 |  |
| Redeemed for cash |  | (1 210 | ) | (5 577 | ) | (217 | ) |
| Forfeited/expired |  | (6 | ) | (274 | ) | (1 | ) |
Outstanding, December 31, 2019 |  | 2 193 |  | 13 602 |  | 1 287 |  |
| Granted |  | 1 232 |  | 6 567 |  | 289 |  |
| Redeemed for cash |  | (1 086 | ) | (4 707 | ) | (191 | ) |
| Forfeited/expired |  | (54 | ) | (367 | ) | — |  |
Outstanding, December 31, 2020 |  | 2 285 |  | 15 095 |  | 1 385 |  |
Stock Appreciation Rights (SARs) |
SHARE BASED COMPENSATION |
Summary of share units and stock appreciation rights |
|  | 2020 |  | 2019 |
|  | Number (thousands) |  | Weighted Average Exercise Price ($) |  | Number (thousands) |  | Weighted Average Exercise Price ($) |
Outstanding, beginning of year |  | 385 |  | 39.83 |  | 363 |  | 38.60 |
Granted |  | 132 |  | 37.41 |  | 112 |  | 42.95 |
Exercised |  | (7 | ) | 36.38 |  | (44 | ) | 34.53 |
Forfeited/expired |  | (1 | ) | 39.08 |  | (46 | ) | 42.85 |
Outstanding, end of year |  | 509 |  | 39.25 |  | 385 |  | 39.83 |
Exercisable, end of year |  | 307 |  | 39.09 |  | 223 |  | 37.62 |

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