Trade and other receivables - Components (Details) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Trade and other receivables
Trade receivables	€ 846	€ 920
Other receivables and prepayments	216	244
Total trade and other current receivables	€ 1,062	€ 1,164

Receivables that represent amounts paid for goods and services before they have been delivered and other receivables.

No definition available.

Name:	ardf_OtherCurrentReceivablesAndPrepayments
Namespace Prefix:	ardf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current trade receivables. [Refer: Trade receivables]

+ References

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+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration