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Note 25 Sensitivity analysis (Details) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Discount rate sensitivity analysis [Member] |  |  |
Sensitivity analysis [Line Items] |  |  |
Basis points change sensitivity analysis | 0.50% |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | € (282) | € (354) | € (367)
Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption | € 307 | 390 | 405
Rate of salary increase sensitivity analysis [Member] |  |  |
Sensitivity analysis [Line Items] |  |  |
Basis points change sensitivity analysis | 0.50% |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | € 2 | 4 | 3
Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption | € (2) | (4) | (3)
Rate of pension increase sensitivity analysis [Member] |  |  |
Sensitivity analysis [Line Items] |  |  |
Basis points change sensitivity analysis | 0.50% |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | € 28 | 29 | 27
Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption | € (26) | (27) | (26)
Medical cost trend rate sensitivity analysis [Member] |  |  |
Sensitivity analysis [Line Items] |  |  |
Basis points change sensitivity analysis | 0.50% |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | € 109 | 145 | 169
Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption | € (98) | (129) | (133)
Change in obligation from each additional year of longevity [Member] |  |  |
Sensitivity analysis [Line Items] |  |  |
Basis points change sensitivity analysis |  |  |
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption | € 170 | 211 | 137
Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption | € 0 | € 0 | € 0

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- Definition Decrease In Defined Benefit Obligation Due To Reasonably Possible Increase In Actuarial Assumption + References No definition available. + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2021-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2021-en-r&anchor=para_145_a&doctype=Standard -URIDate 2021-03-24 + Details
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