v3.23.3
RETIREMENT BENEFIT PLANS - Retirement Benefits Expense (Income) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Pension plans | UNITED STATES        
Retirement benefits plans expense (income)        
Service cost $ 4 $ 6 $ 14 $ 22
Interest cost 35 32 106 80
Expected return on plan assets (48) (50) (146) (155)
Amortization 1 2 3 14
Total (8) (10) (23) (39)
Settlements 9 18 28 49
Total expense (income) 1 8 5 10
Pension plans | Foreign Plan        
Retirement benefits plans expense (income)        
Service cost 11 15 32 45
Interest cost 22 12 64 36
Expected return on plan assets (31) (28) (91) (88)
Amortization 1 11 5 35
Total 4 9 11 27
Settlements 1 0 2 1
Total expense (income) 5 10 13 29
Postretirement plan        
Retirement benefits plans expense (income)        
Service cost 0 0 0 1
Interest cost 3 2 8 5
Expected return on plan assets 0 0 0 0
Amortization (4) (1) (13) (5)
Total (1) 0 (5) 0
Settlements 0 0 0 0
Total expense (income) $ (1) $ 0 $ (5) $ 0