POSTRETIREMENT BENEFIT PLANS - Estimated Future Benefit Payments, Benefit Plans (Details) $ in Millions	Dec. 31, 2022 USD ($)
Principal pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023	$ 3,830
2024	3,865
2025	3,890
2026	3,910
2027	3,920
2028-2032	19,510
Other pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023	850
2024	845
2025	855
2026	870
2027	885
2028-2032	4,585
Principal retiree benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2023	375
2024	360
2025	345
2026	330
2027	325
2028-2032	$ 1,375

Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.

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Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.

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