SHARE BASED COMPENSATION (Tables)

12 Months Ended

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