RETIREMENT-RELATED BENEFITS - Expected Benefit Payments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Defined Benefit Pension Plans
Expected Benefit Payments
Expected benefit payments, 2022	$ 99
Expected benefit payments, 2023	87
Expected benefit payments, 2024	87
Expected benefit payments, 2025	107
Expected benefit payments, 2026	100
Expected benefit payments, 2027-2031	592
Nonpension Postretirement Plans
Expected Benefit Payments
Expected benefit payments, 2023	1
Expected benefit payments, 2024	1
Expected benefit payments, 2025	1
Expected benefit payments, 2026	1
Expected benefit payments, 2027-2031	$ 3

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- Definition

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

+ 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 (f)
-URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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- Definition

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.

+ References

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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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