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Note 23 - Employee Benefits - Actuarial Assumptions (Details) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
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Bottom of range [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Discount rate | [1] | 3.60% | 3.90% | 4.10%
Inflation | [1] | 2.00% | 2.00% | 2.00%
Future salary increases | [1] | 1.00% | 1.00% | 1.00%
Future pension increases | [1] | 2.00% | 2.00% | 2.00%
Medical cost trend rate | [1] | 4.50% | 3.80% | 4.50%
Life expectation for an over 65 years old male | [1] | 83 | 80 | 85
Life expectation for an over 65 years old female | [1] | 86 | 83 | 88
Top of range [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Discount rate | [1] | 10.60% | 10.50% | 12.10%
Inflation | [1] | 5.00% | 5.20% | 5.20%
Future salary increases | [1] | 8.70% | 8.50% | 8.80%
Future pension increases | [1] | 4.30% | 4.50% | 4.50%
Medical cost trend rate | [1] | 7.90% | 8.20% | 8.20%
Dental claims trend rate | [1] |  |  |
Life expectation for an over 65 years old male | [1] | 87 | 86 | 70
Life expectation for an over 65 years old female | [1] | 89 | 89 | 71
Weighted average [member] |  |  |  |
Statement Line Items [Line Items] |  |  |  |
Medical cost trend rate | [1] | 7.90% | 8.20% | 8.20%
Dental claims trend rate | [1] | 4.30% | 4.50% | 4.50%
[1] | Includes assumptions in Latin America - North, Latin America - South and Canada.

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- Definition Dental cost trend rate used as significant actuarial assumption to determine the present value of a defined benefit obligation. + References No definition available. + Details
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- Definition The life expectancy after 65 years of age of a female used as a significant actuarial assumption to determine the present value of a defined benefit obligation. + References No definition available. + Details
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- Definition The life expectancy after 65 years of age of a male used as a significant actuarial assumption to determine the present value of a defined benefit obligation. + References No definition available. + Details
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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 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The expected rate of inflation 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 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + 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 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + 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 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + 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 2017-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_144&doctype=Standard -URIDate 2017-03-09 + Details
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