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Note 14 - Goodwill - Weighted Average Cost of Capital (Details) - Goodwill [member] - North Latin America segment [member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Bottom of range [member]
Statement Line Items [Line Items]
weighted average cost of capital, goodwill	8.59%	8.39%
Top of range [member]
Statement Line Items [Line Items]
weighted average cost of capital, goodwill	10.29%	10.27%

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- References

No definition available.

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- Definition

Weighted average cost of capital used as a significant Level 3 unobservable input for assets. [Refer: Level 3 of fair value hierarchy [member]]

+ References

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