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EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Defined Benefit Plan Disclosure |  |  |
Discount rate for 17-year amortization period of unfunded liability for frozen defined benefit plan (percent) | 8.85% |  |
Estimated funding by employer in next fiscal year | $ 0 |  |
Defined contribution plan costs | $ 1,000,000,000 | $ 875,000,000 | $ 805,000,000
Assumed healthcare plan pre age | 65 years |  |
Assumed healthcare plan post age | 65 years |  |
Projected benefit obligation | $ 4,000,000,000 |  |
Aggregate fair value of plan assets | $ 3,900,000,000 |  |
Weighted average expected long-term rate of return on plan assets (percent) | 7.00% | 8.98% | 8.97%
Restructuring charges | $ (124,000,000) | $ (19,000,000) | $ 8,219,000,000
Profit sharing | 563,000,000 | 108,000,000 | 0
Voluntary early retirement and separation programs |  |  |
Defined Benefit Plan Disclosure |  |  |
Restructuring charges |  | 3,400,000,000 |
Voluntary early retirement and separation programs | Special termination benefits |  |  |
Defined Benefit Plan Disclosure |  |  |
Special termination benefit charge |  | 1,300,000,000 |
Other Postretirement and Postemployment Benefits |  |  |
Defined Benefit Plan Disclosure |  |  |
Special termination benefit charge | $ 0 | $ 0 | 1,260,000,000
Special termination benefits |  |  | $ 1,300,000,000
Growth-seeking assets | Minimum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 20.00% |  |
Growth-seeking assets | Maximum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 40.00% |  |
Income-generating assets | Minimum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 25.00% |  |
Income-generating assets | Maximum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 35.00% |  |
Risk-diversifying assets | Minimum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 35.00% |  |
Risk-diversifying assets | Maximum |  |  |
Defined Benefit Plan Disclosure |  |  |
Plan assets, target allocations (percent) | 45.00% |  |

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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920 + Details
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