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Summary of Employee Benefits (Details) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability $ 1,180 $ 1,289
Total Net defined benefit liability 9,464 9,880
Current net defined benefit liability 706 651
Non-current net defined benefit liability 8,758 9,229
Health Care Plan [Member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 4,919 4,485
Petros pension plan renegotiated [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 3,101 3,233
Petros pension plan non renegotiated [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 702 658
Petros pension plan renegotiated one [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 300 817
Petros pension plan non renegotiated one [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 249 511
Petros two pension plan [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability 192 165
Other plans [member]    
DisclosureEmployeeBenefitsLineItems [Line Items]    
Net defined benefit liability $ 1 $ 11