Financial assets, liabilities and financial result (excluding Orange Bank) - Cash flow hedge reserve (Details) € in Millions	12 Months Ended
Dec. 31, 2017 EUR (€)
Disclosure of detailed information about financial instruments [abstract]
Loss in cash flow hedge	€ 51
Reclassification in financial result for the period	(10)
Reclassification in operating income for the period	(3)
Reclassification in initial carrying amount of hedged item	€ 11

The amounts removed from equity and included in the initial cost or other carrying amount of a non-financial asset (liability) whose acquisition or incurrence was a hedged, highly probable forecast transaction, before tax. [Refer: Carrying amount [member]]

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- References

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- Definition

The gains (losses) recognised in other comprehensive income on cash flow hedges, before tax. [Refer: Cash flow hedges [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of reclassification adjustments related to cash flow hedges, before tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Cash flow hedges [member]; Other comprehensive income]

+ References

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Reclassification adjustments on cash flow hedges, operating income, before tax

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No definition available.

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