PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments		$ 31	$ 27	$ 27
U.S. Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan				790
Canadian Qualified Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Assets Transferred to (from) Plan		420
Qualified and Registered Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, private equity and hedge fund investments to a third party	$ 189
Registered Pension Plans | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments		2
Expected contribution to benefit plans during 2023		2
Non Registered Plans | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments		2
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		13
Expected contribution to benefit plans during 2023		12
Pension
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		205		$ 253
Employer contributions and benefit payments		17	50
Other Post-employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments		7	$ 9
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		3
Other Post-employment Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments		$ 4