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RETIREMENT BENEFITS PLANS - Changes in Pension and Other Postretirement Liabilities Recognized in AOCI (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Pension plans | United States |  |
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss |  |
Balance at January 1 | $ 713 | $ 1,051
Prior service cost arising during the year | 1 | 1
Net loss (gain) arising during the year | 173 | (238)
Currency translation | 0 | 0
Other | 0 | 0
Less amounts included in expense during the year | (76) | (101)
Net change for the year | 98 | (338)
Balance at December 31 | 811 | 713
Pension plans | Foreign Plan |  |
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss |  |
Balance at January 1 | 763 | 1,026
Prior service cost arising during the year | 1 | 0
Net loss (gain) arising during the year | (149) | (151)
Currency translation | (64) | (24)
Other | 0 | 0
Less amounts included in expense during the year | (47) | (88)
Net change for the year | (259) | (263)
Balance at December 31 | 505 | 763
Other postretirement benefits plans |  |
Changes in pension and other postretirement benefit liabilities recognized in Accumulated other comprehensive loss |  |
Balance at January 1 | (55) | (2)
Prior service cost arising during the year | (2) | 0
Net loss (gain) arising during the year | (69) | (59)
Currency translation | (1) | 0
Other | 0 | 0
Less amounts included in expense during the year | 7 | 6
Net change for the year | (65) | (53)
Balance at December 31 | $ (120) | $ (55)

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