Employee benefit obligations - Plan asset (Details) - Ardagh Group S.A. - Defined benefit plan - EUR (€) € in Millions	Dec. 31, 2017	Dec. 31, 2016
Employee benefit obligations
Equities	€ 981	€ 1,152
Target return funds	248	275
Bonds	208	558
Cash/other	145	174
Total plan assets	€ 1,582	€ 2,159
Equities (Percentage)	62.00%	53.00%
Target return funds (Percentage)	16.00%	13.00%
Bonds (Percentage)	13.00%	26.00%
Cash/other (Percentage)	9.00%	8.00%
Total plan assets (Percentage)	100.00%	100.00%

The amount that instruments representing bonds constitute of the fair value of defined benefit plan assets.

No definition available.

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- Definition

percentage of bonds contributed to fair value of plan assets.

+ References

No definition available.

+ Details

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- Definition

percentage of cash and other contributed to fair value of plan assets.

+ References

No definition available.

+ Details

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- Definition

The percentage of equity instrument contributed to fair value of plan assets.

+ References

No definition available.

+ Details

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- Definition

percentage of target return funds contributed to fair value of plan assets.

+ References

No definition available.

+ Details

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- Definition

The amount that instruments representing target return funds constitute of the fair value of defined benefit plan assets.

+ References

No definition available.

+ Details

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- Definition

The total percentage of plan assets.

+ References

No definition available.

+ Details

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- Definition

The amount that cash and cash equivalents constitute of the fair value of defined benefit plan assets. [Refer: Cash and cash equivalents; Plan assets, at fair value; Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The amount that instruments representing equity (rather than debt) constitute of the fair value of defined benefit plan assets. [Refer: Plan assets, at fair value; Defined benefit plans [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition

The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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