XML 47 R40.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Trade Receivables and Other (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Text block1 [abstract] |
Summary of Trade Receivables and Other | Trade receivables and other are comprised of the following:
|  | At June 30, 2018 |  |  | At December 31, 2017 |
(in millions of Euros) |  | Non-current |  |  | Current |  |  | Non-current |  |  | Current |
Trade receivables – gross |  |  | — |  |  |  | 529 |  |  |  | — |  |  |  | 309 |
Impairment |  |  | — |  |  |  | (3 | ) |  |  | — |  |  |  | (3 | )
Total Trade receivables – net |  |  | — |  |  |  | 526 |  |  |  | — |  |  |  | 306 |
Finance lease receivables |  |  | 3 |  |  |  | 6 |  |  |  | 6 |  |  |  | 6 |
Current income tax receivables |  |  | — |  |  |  | 53 |  |  |  | — |  |  |  | 58 |
Other taxes |  |  | — |  |  |  | 41 |  |  |  | — |  |  |  | 30 |
Unbilled tooling costs (until December 31, 2017) |  |  | — |  |  |  | — |  |  |  | 28 |  |  |  | — |
Contract assets (from January 1, 2018) |  |  | 36 |  |  |  | 1 |  |  |  | — |  |  |  | — |
Prepaid expenses |  |  | 1 |  |  |  | 12 |  |  |  | 5 |  |  |  | 8 |
Restricted cash |  |  | — |  |  |  | — |  |  |  | 1 |  |  |  | — |
Other |  |  | 8 |  |  |  | 17 |  |  |  | 8 |  |  |  | 11 |
Total Other receivables |  |  | 48 |  |  |  | 130 |  |  |  | 48 |  |  |  | 113 |
Total Trade receivables and Other |  |  | 48 |  |  |  | 656 |  |  |  | 48 |  |  |  | 419 |
Summary of Contract Assets |
|  | At June 30, 2018 |  |  | At January 1, 2018 |
(in millions of Euros) |  | Non-current |  |  | Current |  |  | Non-current |  |  | Current |
Unbilled tooling costs |  |  | 33 |  |  |  | — |  |  |  | 28 |  |  |  | — |
Other |  |  | 3 |  |  |  | 1 |  |  |  | 4 |  |  |  | 1 |
Contract assets |  |  | 36 |  |  |  | 1 |  |  |  | 32 |  |  |  | 1 |
Summary of Ageing of Total Trade Receivables - Net | The ageing of total trade receivables – net is as follows:
(in millions of Euros) |  | At June 30, 2018 |  |  | At December 31, 2017 |
Not past due |  |  | 505 |  |  |  | 286 |
1 – 30 days past due |  |  | 17 |  |  |  | 13 |
31 – 60 days past due |  |  | 2 |  |  |  | 2 |
61 – 90 days past due |  |  | 0 |  |  |  | 3 |
Greater than 91 days past due |  |  | 2 |  |  |  | 2 |
Total Trade receivables – net |  |  | 526 |  |  |  | 306 |
Summary of Carrying Amounts of Total Trade Receivables - Net by Currency | The composition of the carrying amounts of total Trade receivables – net by currency is shown in Euro equivalents as follows:
(in millions of Euros) |  | At June 30, 2018 |  |  | At December 31, 2017 |
Euro |  |  | 267 |  |  |  | 124 |
U.S. Dollar |  |  | 232 |  |  |  | 164 |
Swiss franc |  |  | 8 |  |  |  | 4 |
Other currencies |  |  | 19 |  |  |  | 14 |
Total trade receivables – net |  |  | 526 |  |  |  | 306 |

X
- Definition Disclosure Of Ageing Of Trade Receivables [Text Block] + References No definition available. + Details
Name: | cstm_DisclosureOfAgeingOfTradeReceivablesExplanatory
Namespace Prefix: | cstm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of detailed information about trade and other receivables. + References No definition available. + Details
Name: | cstm_DisclosureOfDetailedInformationAboutTradeAndOtherReceivablesExplanatory
Namespace Prefix: | cstm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of Trade Receivables Net Denominated in Major Currencies [Text Block] + References No definition available. + Details
Name: | cstm_DisclosureOfTradeReceivablesNetDenominatedInMajorCurrenciesTextBlock
Namespace Prefix: | cstm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text Block [Abstract] + References No definition available. + Details
Name: | cstm_TextBlock1Abstract
Namespace Prefix: | cstm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of assets recognised from the costs to obtain or fulfil contracts with customers. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2018-01-01 -Name IFRS -Number 15 -IssueDate 2017-01-01 -Paragraph 128 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2017-03-01&anchor=para_128_a&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfAssetsRecognisedFromCostsToObtainOrFulfilContractsWithCustomersExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration