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Pension and Postretirement Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2022
Retirement Benefits [Abstract]  
Components of net periodic benefit cost (benefit) The other components of net periodic benefit cost are reflected in other expense (income), net. Components of net periodic benefit cost and other supplemental information for the three and nine months ended September 30, 2022 and 2021 follow:
Benefit Plan Information
Three months ended September 30,
Qualified and Non-qualified
Pension Benefits		Postretirement
Benefits
United StatesInternational
(Millions)202220212022202120222021
Net periodic benefit cost (benefit)
Operating expense
Service cost $64 $72 $32 $41 $10 $12 
Non-operating expense
Interest cost 105 90 32 25 13 11 
Expected return on plan assets (241)(264)(69)(81)(17)(19)
Amortization of transition asset— — — 1 — — 
Amortization of prior service benefit(6)(6)— — (8)(9)
Amortization of net actuarial loss 106 132 10 26 10 14 
Settlements, curtailments, special termination benefits and other — — — — — — 
Total non-operating expense (benefit)(36)(48)(27)(29)(2)(3)
Total net periodic benefit cost (benefit) $28 $24 $5 $12 $8 $9 
Nine months ended September 30,
Qualified and Non-qualified
Pension Benefits		Postretirement
Benefits
United StatesInternational
(Millions)202220212022202120222021
Net periodic benefit cost (benefit)
Operating expense
Service cost $192 $216 $100 $125 $31 $35 
Non-operating expense
Interest cost 313 270 96 75 39 33 
Expected return on plan assets (723)(792)(211)(244)(52)(58)
Amortization of transition asset— — 1 2 — — 
Amortization of prior service benefit(18)(18)— (2)(24)(25)
Amortization of net actuarial loss 318 396 30 80 30 42 
Settlements, curtailments, special termination benefits and other — — — — 2 2 
Total non-operating expense (benefit)(110)(144)(84)(89)(5)(6)
Total net periodic benefit cost (benefit) $82 $72 $16 $36 $26 $29