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The net expense with pension and health plans is presented below: (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value1 $ 73 $ 142
Description of amounts of other assets used by entity included in fair value of plan assets1 253 491
Net costs 326 633
Defined benefit obligation at present value other 102 199
Defined benefit obligation at present value other1 210 416
Obligations with contribution for the revision of the lump sum death benefit 11 23
Net costs related to active employees other1 323 638
Petros renegotiated [member]    
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value1 9 17
Description of amounts of other assets used by entity included in fair value of plan assets1 111 216
Net costs 120 233
Defined benefit obligation at present value other 14 27
Defined benefit obligation at present value other1 102 203
Obligations with contribution for the revision of the lump sum death benefit 8 18
Net costs related to active employees other1 124 248
Petros non renegotiated [member]    
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value1 2 3
Description of amounts of other assets used by entity included in fair value of plan assets1 36 71
Net costs 38 74
Defined benefit obligation at present value other 2 4
Defined benefit obligation at present value other1 39 78
Obligations with contribution for the revision of the lump sum death benefit 3 5
Net costs related to active employees other1 44 87
Pension plans petros two [member]    
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value1 5 10
Description of amounts of other assets used by entity included in fair value of plan assets1 4 7
Net costs 9 17
Defined benefit obligation at present value other 15 30
Defined benefit obligation at present value other1 4 7
Net costs related to active employees other1 19 37
Health Care Plan [Member]    
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value1 57 112
Description of amounts of other assets used by entity included in fair value of plan assets1 102 197
Net costs 159 309
Defined benefit obligation at present value other 71 138
Defined benefit obligation at present value other1 64 127
Net costs related to active employees other1 135 265
Other plans [member]    
IfrsStatementLineItems [Line Items]    
Defined benefit obligation at present value other1 1 1
Net costs related to active employees other1 $ 1 $ 1