SHARE CAPITAL - Movements in Treasury Shares (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Movement in Treasury Shares [Roll Forward]
Beginning balance (in shares)	119.5	115.7	121.6
Acquisition of common shares (in shares)	11.5	11.3	2.7
Distribution of common shares (in shares)	(6.0)	(7.1)	(8.4)
Common shares distributed to meet ESPP obligation (in shares)	(0.3)	(0.4)	(0.2)
Ending balance (in shares)	124.7	119.5	115.7