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PENSION AND OTHER POSTRETIREMENT BENEFITS (Details 2) - Components of Net Periodic Pension Cost - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Pension Plan |  |  |
Changes in benefit obligations and plan assets recognized in other comprehensive income |  |  |
Amortization of prior service cost | $ (3) | $ (3) | $ (3)
Recognized actuarial (loss) gain | (78) | (75) | (28)
Incurred actuarial loss (gain) | (368) | 85 | 101
Foreign currency translation adjustments | 5 | 19 | 4
Total recognized in other comprehensive (income) loss | (444) | 26 | 74
Total recognized in net periodic pension cost and other comprehensive (income) loss | (366) | 128 | 139
Other Postretirement Benefit Plan |  |  |
Components of Net Periodic Benefit Cost |  |  |
Interest cost | 5 | 7 | 10
Recognized net actuarial loss (gain) | 0 | (1) |
Net periodic pension cost | 5 | 6 | 10
Changes in benefit obligations and plan assets recognized in other comprehensive income |  |  |
Recognized actuarial (loss) gain | 0 | 1 |
Incurred actuarial loss (gain) | (8) | 14 | (1)
Total recognized in other comprehensive (income) loss | (8) | 15 | (1)
Total recognized in net periodic pension cost and other comprehensive (income) loss | (3) | 21 | 9
UNITED STATES |  |  |
Pension and other postretirement benefits |  |  |
Defined Benefit Plan, Accumulated Benefit Obligation | 2,986 | 3,091 |
Plans with accumulated benefit obligation in excess of plan assets: |  |  |
ABO | 424 | 417 |
Plans with projected benefit obligation in excess of plan assets: |  |  |
PBO | 449 | 448 |
Components of Net Periodic Benefit Cost |  |  |
Service cost | 139 | 133 | 116
Interest cost | 79 | 95 | 108
Expected return on plan assets | (199) | (195) | (189)
Amortization of prior service cost | 1 | 1 | 1
Recognized net actuarial loss (gain) | 47 | 41 | 17
Net periodic pension cost | 67 | 75 | 53
Changes in benefit obligations and plan assets recognized in other comprehensive income |  |  |
Foreign currency translation adjustments | 0 | 0 |
UNITED KINGDOM |  |  |
Pension and other postretirement benefits |  |  |
Defined Benefit Plan, Accumulated Benefit Obligation | 1,844 | 1,954 |
Components of Net Periodic Benefit Cost |  |  |
Service cost | 33 | 29 | 26
Interest cost | 30 | 36 | 43
Expected return on plan assets | (85) | (74) | (70)
Amortization of prior service cost | 2 | 2 | 2
Recognized net actuarial loss (gain) | 31 | 34 | 11
Net periodic pension cost | 11 | 27 | $ 12
Changes in benefit obligations and plan assets recognized in other comprehensive income |  |  |
Foreign currency translation adjustments | $ (32) | $ 83 |

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