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Other Gains / (Losses) - Net - Summary of Other Gains/(Losses) Net (Parenthetical) (Detail) € in Millions	6 Months Ended
	Jun. 30, 2017 EUR (€)
Analysis of income and expense [abstract]
Gains / (Losses) on pension plan amendments	€ 22

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- Definition

Gains (losses) on pension plan amendments.

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No definition available.

+ Details

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- References

No definition available.

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