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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS - Changes and amounts in AOCI for pension and other postretirement benefit plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Changes in AOCI for our benefit plans, pretax |  |  |
Impact of divestitures | $ 69 | $ 157 | $ 104
Pension plans |  |  |
Net periodic pension and other postretirement benefit cost |  |  |
Prior Service Credit (Cost) | (14) | (17) |
Net actuarial gain (loss) | (1,680) | (1,889) |
Changes in AOCI for our benefit plans, pretax |  |  |
Beginning balance in AOCI | (1,906) | (1,755) |
Recognized prior service cost (credit) | 1 | 1 |
Recognized net actuarial loss (gain) | 100 | 177 |
Prior service cost arising during the year | 2 | 0 |
Net actuarial gain (loss) occurring during the year | 90 | (313) |
Impact of divestitures | (6) | 0 |
Net foreign currency translation adjustments | 25 | (16) |
Balance in AOCI | (1,694) | (1,906) | (1,755)
Other postretirement benefit plans |  |  |
Net periodic pension and other postretirement benefit cost |  |  |
Prior Service Credit (Cost) | 15 | 20 |
Net actuarial gain (loss) | 6 | 41 |
Changes in AOCI for our benefit plans, pretax |  |  |
Beginning balance in AOCI | 61 | 95 |
Recognized prior service cost (credit) | (3) | (3) |
Recognized net actuarial loss (gain) | (23) | (19) |
Prior service cost arising during the year | 0 | (1) |
Net actuarial gain (loss) occurring during the year | (12) | (12) |
Impact of divestitures | 0 | 0 |
Net foreign currency translation adjustments | (2) | 1 |
Balance in AOCI | $ 21 | $ 61 | $ 95

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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (j) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (k) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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