PENSION AND OTHER POST-EMPLOYMENT BENEFIT PLANS - Funded Status of Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Maximum | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	$ 1
Pension
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	2,347	$ 2,278
Service cost	21	23	$ 36
Interest cost	117	118	106
Actuarial (gain) loss	(102)	63
Plan participants’ contributions	0	0
Benefits paid, including lump sum and annuity transfers	(130)	(146)
Foreign currency translation and other	(19)	11
Projected benefit obligation at end of year	2,234	2,347	2,278
Fair value of plan assets at beginning of year (estimated)	2,000	2,053
Actual return on plan assets	(118)	71
Employer contributions and benefit payments	12	14
Plan participants’ contributions	0	0
Benefits paid, including lump sum and annuity transfers	(130)	(146)
Other, including foreign currency translation	(21)	8
Fair value of plan assets at end of year (estimated)	1,743	2,000	2,053
Noncurrent assets	47	49
Current liabilities	(11)	(11)
Noncurrent liabilities	(527)	(385)
Funded status	(491)	(347)
Accumulated benefit obligation at end of year	$ 2,179	$ 2,289
Lump sum distributions election	70.00%	70.00%
Pension | U.S.
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.70%	5.20%
Pension | Canada
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.70%	4.70%
Pension | Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.70%	4.70%
Rate of compensation increase	1.00%	1.00%
Pension | Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.70%	5.20%
Rate of compensation increase	13.00%	13.00%
Other Post-employment Benefits
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at beginning of year	$ 89	$ 95
Service cost	0	0	0
Interest cost	4	5	3
Actuarial (gain) loss	(3)	(2)
Plan participants’ contributions	2	2
Benefits paid, including lump sum and annuity transfers	(11)	(12)
Foreign currency translation and other	(2)	1
Projected benefit obligation at end of year	79	89	95
Fair value of plan assets at beginning of year (estimated)	5	8
Actual return on plan assets	0	0
Employer contributions and benefit payments	6	6
Plan participants’ contributions	2	2
Benefits paid, including lump sum and annuity transfers	(11)	(12)
Other, including foreign currency translation	1	1
Fair value of plan assets at end of year (estimated)	3	5	$ 8
Noncurrent assets	0	0
Current liabilities	(7)	(8)
Noncurrent liabilities	(69)	(76)
Funded status	(76)	$ (84)
Other Post-employment Benefits | U.S.
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	$ 5
Discount rate	5.50%	5.10%
Ultimate	4.50%	4.50%
Year when rate will reach Ultimate	2035	2035
Other Post-employment Benefits | Canada
Defined Benefit Plan Disclosure [Line Items]
Employer contributions and benefit payments	$ 1
Discount rate	4.50%	4.60%
Assumed for next year	5.06%	5.13%
Ultimate	4.00%	4.00%
Year when rate will reach Ultimate	2040	2040
Other Post-employment Benefits | Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.50%	4.60%
Assumed for next year	5.06%	5.13%
Ultimate	4.00%	4.00%
Other Post-employment Benefits | Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rate	5.50%	5.10%
Assumed for next year	7.00%	7.25%
Ultimate	4.50%	4.50%