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26. POST-EMPLOYMENT OBLIGATIONS (Details 1) - BRL (R$) R$ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Beginning balance | R$ 13,892 | R$ 12,663 | R$ 12,306
Cost of current service | 18 | 15 | 19
Interest on the actuarial obligation | 1,213 | 1,161 | 1,246
Actuarial losses (gains): |  |  |
Due to changes in demographic assumptions | 6 |  | 191
Due to changes in financial assumptions | 2,775 | 903 | 537
Due to adjustments based on experience | 160 | 161 | (53)
Due to changes and adjustments | 2,941 | 1,064 | 675
Plan amendment - Past service |  |  | (619)
Benefits paid | (1,042) | (1,011) | (964)
Ending balance | 17,022 | 13,892 | 12,663
Pension Plans and Retirement Supplement Plans [Member] |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Beginning balance | 11,073 | 10,545 | 9,743
Cost of current service | 1 | 4 | 5
Interest on the actuarial obligation | 963 | 959 | 980
Actuarial losses (gains): |  |  |
Due to changes in demographic assumptions | 6 |  | 191
Due to changes in financial assumptions | 2,058 | 467 | 414
Due to adjustments based on experience | 83 | (20) | 53
Due to changes and adjustments | 2,147 | 447 | 658
Plan amendment - Past service |  |  |
Benefits paid | (899) | (881) | (841)
Ending balance | 13,285 | 11,073 | 10,545
Health Plan [Member] |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Beginning balance | 2,344 | 1,809 | 1,711
Cost of current service | 14 | 10 | 11
Interest on the actuarial obligation | 208 | 172 | 178
Actuarial losses (gains): |  |  |
Due to changes in demographic assumptions |  |  |
Due to changes in financial assumptions | 576 | 402 | 66
Due to adjustments based on experience | 91 | 68 | (44)
Due to changes and adjustments | 667 | 470 | 22
Plan amendment - Past service |  |  |
Benefits paid | (131) | (118) | (113)
Ending balance | 3,102 | 2,344 | 1,809
Dental Plan [Member] |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Beginning balance | 48 | 39 | 38
Cost of current service |  | 0 |
Interest on the actuarial obligation | 5 | 4 | 3
Actuarial losses (gains): |  |  |
Due to changes in demographic assumptions |  |  |
Due to changes in financial assumptions | 11 | 8 | 2
Due to adjustments based on experience |  |  | (2)
Due to changes and adjustments | 11 | 8 |
Plan amendment - Past service |  |  |
Benefits paid | (2) | (3) | (2)
Ending balance | 61 | 48 | 39
Life Insurance Plan [Member] |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Beginning balance | 427 | 270 | 814
Cost of current service | 3 | 2 | 3
Interest on the actuarial obligation | 38 | 25 | 85
Actuarial losses (gains): |  |  |
Due to changes in demographic assumptions |  |  |
Due to changes in financial assumptions | 130 | 26 | 55
Due to adjustments based on experience | (14) | 113 | (60)
Due to changes and adjustments | 116 | 139 | (5)
Plan amendment - Past service |  |  | (619)
Benefits paid | (10) | (9) | (8)
Ending balance | R$ 574 | R$ 427 | R$ 270

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- Definition Actuarial gains (losses) arising from adjustments based on experience net defined benefit liability (asset). + References No definition available. + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in demographic assumptions that result in remeasurements of the net defined benefit liability (asset). Demographic assumptions deal with matters such as: (a) mortality; (b) rates of employee turnover, disability and early retirement; (c) the proportion of plan members with dependants who will be eligible for benefits; (d) the proportion of plan members who will select each form of payment option available under the plan terms; and (e) claim rates under medical plans. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c_ii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from actuarial gains (losses) arising from changes in financial assumptions that result in remeasurements of the net defined benefit liability (asset). Financial assumptions deal with items such as: (a) the discount rate; (b) benefit levels, excluding any cost of the benefits to be met by employees, and future salary; (c) in the case of medical benefits, future medical costs, including claim handling costs (ie the costs that will be incurred in processing and resolving claims, including legal and adjuster's fees); and (d) taxes payable by the plan on contributions relating to service before the reporting date or on benefits resulting from that service. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph c -Clause iii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_c_iii&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from employee service in the current period. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_a&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from settlements. Settlements are transactions that eliminate all further legal or constructive obligations for part or all of the benefits provided under a defined benefit plan, other than a payment of benefits to, or on behalf of, employees that is set out in the terms of the plan and included in the actuarial assumptions. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2019-01-01 -Paragraph 141 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2019-en-r&anchor=para_141_d&doctype=Standard -URIDate 2019-03-27 + Details
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