Trade and other payables (Details) - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Trade and other payables
Trade payables	€ 1,225	€ 1,055
Other payables and accruals	365	419
Amounts owed to parent company		3
Other tax and social security payable	41	32
Payables and accruals for exceptional items	29	39
Total	€ 1,660	€ 1,548

The amount payable to parent entity.

No definition available.

Name:	ardf_AmountPayableToParentEntity
Namespace Prefix:	ardf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of other payables and accruals that the entity does not separately disclose in the same statement or note.

+ References

No definition available.

+ Details

Name:	ardf_OtherPayablesAndAccruals
Namespace Prefix:	ardf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of payables and accruals for exceptional items.

+ References

No definition available.

+ Details

Name:	ardf_PayablesAndAccrualsForExceptionalItems
Namespace Prefix:	ardf_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of current payables on social security and taxes other than incomes tax. [Refer: Payables on social security and taxes other than income tax]

+ References

+ Details

Name:	ifrs-full_CurrentPayablesOnSocialSecurityAndTaxesOtherThanIncomeTax
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph k
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_k&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_TradeAndOtherCurrentPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The current amount of payment due to suppliers for goods and services used in entity's business. [Refer: Current liabilities; Trade payables]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 78
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 70
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_70&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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