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Note 25 - Post-employment and other employee benefit commitments. Actuarial Assumptions (Details) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Spain [Member] |  |  |
Disclosure Of Actuarial Assumptions Commitments Line Items |  |  |
Actuarial Assumption Of Discount Rates | 0.53% | 0.68% | 1280000.00%
Actuarial Assumption Of Expected Rates Of Salary Increases | 0.00% | 0.00% | 0.00%
Actuarial Assumption Of Expected Rates Of Pension Increases | 0.00% | 0.00% | 0.00%
Actuarial Assumption Of Medical Cost Trend Rates | 0.00% | 0.00% | 0.00%
Mortality Table | PERM/F 2000P | PERM/F 2000P | PER 2020
Mexico [Member] |  |  |
Disclosure Of Actuarial Assumptions Commitments Line Items |  |  |
Actuarial Assumption Of Discount Rates | 8.37% | 9.04% | 10450000.00%
Actuarial Assumption Of Expected Rates Of Salary Increases | 4.00% | 4.75% | 4750000.00%
Actuarial Assumption Of Expected Rates Of Pension Increases | 1.94% | 2.47% | 2510000.00%
Actuarial Assumption Of Medical Cost Trend Rates | 7.00% | 7.00% | 7000000.00%
Mortality Table | EMSSA09 | EMSSA09 | EMSSA09
United States [Member] |  |  |
Disclosure Of Actuarial Assumptions Commitments Line Items |  |  |
Actuarial Assumption Of Discount Rates |  | 3.24% | 4230000.00%
Actuarial Assumption Of Expected Rates Of Salary Increases |  | 0.00% | 0.00%
Actuarial Assumption Of Expected Rates Of Pension Increases |  | 0.00% | 0.00%
Actuarial Assumption Of Medical Cost Trend Rates |  | 0.00% | 0.00%
Mortality Table | RP 2014 | RP 2014 |
Turkey [Member] |  |  |
Disclosure Of Actuarial Assumptions Commitments Line Items |  |  |
Actuarial Assumption Of Discount Rates | 13.00% | 12.50% | 16300000.00%
Actuarial Assumption Of Expected Rates Of Salary Increases | 11.20% | 9.70% | 14000000.00%
Actuarial Assumption Of Expected Rates Of Pension Increases | 9.70% | 8.20% | 12500000.00%
Actuarial Assumption Of Medical Cost Trend Rates | 13.90% | 12.40% | 16700000.00%
Mortality Table | CSO2001 | CSO2001 | CSO2001

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The expected rate of increases in pension that is used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Medical cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2020-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_144&doctype=Standard -URIDate 2020-01-01 + Details
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