PENSIONS AND OTHER POSTRETIREMENT BENEFITS - Target Allocation and Actual Asset Allocations for Pension and VEBA Plan Assets (Details)	Dec. 31, 2022	Dec. 31, 2021
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	100.00%
Percentage of Plan Assets	100.00%	100.00%
Pension Benefits | Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	33.30%
Percentage of Plan Assets	36.10%	47.60%
Pension Benefits | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	41.60%
Percentage of Plan Assets	40.90%	34.60%
Pension Benefits | Hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	9.20%
Percentage of Plan Assets	2.70%	2.20%
Pension Benefits | Private equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	3.30%
Percentage of Plan Assets	3.30%	2.70%
Pension Benefits | Structured credit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	2.60%
Percentage of Plan Assets	6.90%	5.60%
Pension Benefits | Real estate
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	10.00%
Percentage of Plan Assets	8.20%	5.60%
Pension Benefits | Absolute return fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	0.00%
Percentage of Plan Assets	1.90%	1.70%
OPEB
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	100.00%
Percentage of Plan Assets	100.00%	100.00%
OPEB | Equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	21.90%
Percentage of Plan Assets	22.00%	22.50%
OPEB | Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	73.70%
Percentage of Plan Assets	67.40%	66.40%
OPEB | Hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	2.20%
Percentage of Plan Assets	1.90%	1.80%
OPEB | Private equity
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	0.00%
Percentage of Plan Assets	0.00%	0.00%
OPEB | Structured credit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	1.10%
Percentage of Plan Assets	1.20%	1.20%
OPEB | Real estate
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	1.10%
Percentage of Plan Assets	1.70%	2.10%
OPEB | Absolute return fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023 Target Allocation	0.00%
Percentage of Plan Assets	5.80%	6.00%