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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2021

Share-based payment arrangements [Abstract]

Schedule of DSU and RSU activity

DSU and RSU Activity (Number of Units in Thousands)


			DSUs			Fair value			RSUs			Fair value
At January 1, 2020			476			$8.8			3,110			$41.5
Settled for cash			—			—			(2,136)			(47.3)
Forfeited			—			—			(313)			(5.7)
Granted			85			2.0			1,923			35.2
Credits for dividends			—			—			39			0.9
Change in value			—			2.0			—			14.0
At December 31, 2020			561			$12.8			2,623			$38.6
Settled for cash			—			—			(1,435)			(36.2)

Granted			117			2.2			1,300			26.4
Credits for dividends			—			—			30			0.6
Change in value			—			(2.4)			—			1.6
At December 31, 2021			678			$12.6			2,518			$31.0

Schedule of employee stock option activity

Employee Stock Option Activity (Number of Shares in Millions)


			2021						2020
			Shares			Average Price			Shares			Average Price
C$ options
At January 1			0.1			$10			0.2			$10

Exercised			(0.1)			10			(0.1)			10

At December 31			—			$—			0.1			$10
US$ options
At January 1			—			$—			0.1			$32

Cancelled/expired			—			—			(0.1)			32
At December 31			—			$—			—			$—