PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	$ 35	$ 31	$ 27
Canadian Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		420
Registered Pension Plans | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	1
Expected contribution to benefit plans during 2023	1
Non Registered Plans | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	1
Expected contribution to benefit plans during 2023	2
Non Qualified Pension Plans Defined Benefit | U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	12
Expected contribution to benefit plans during 2023	10
Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		205
Employer contributions and benefit payments	14	17
Other Post-employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	6	$ 7
Expected contribution to benefit plans during 2023	7
Other Post-employment Benefits | Collective Bargaining Arrangement
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to benefit plans during 2023	4
Other Post-employment Benefits | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	1
Other Post-employment Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	$ 5