Trade Receivables and Other - Summary of Contract Assets (Detail) - EUR (€) € in Millions	Jun. 30, 2019	Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Non-current	€ 30	€ 28
Current	1	2
Unbilled Tooling Costs [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Non-current	29	26
Other Cost [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Non-current	1	2
Current	€ 1	€ 2

The amount of current contract assets. [Refer: Contract assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2018-01-01
-Paragraph 105
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_105&doctype=Standard
-URIDate 2018-03-16

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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 of non-current contract assets. [Refer: Contract assets]

+ References

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
Data Type:	na
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