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Inventories | 12 Months Ended
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Dec. 31, 2018
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Inventories | NOTE 15—INVENTORIES
(in millions of Euros) |  | At December 31, 2018 |  |  | At December 31, 2017 |
Finished goods |  |  | 165 |  |  |  | 164 |
Work in progress |  |  | 347 |  |  |  | 332 |
Raw materials |  |  | 112 |  |  |  | 111 |
Stores and supplies |  |  | 67 |  |  |  | 64 |
Inventories write down |  |  | (31 | ) |  |  | (28 | )
Total inventories |  |  | 660 |  |  |  | 643 |
Constellium records inventories at the lower of cost and net realizable value. Any change in the net realizable value adjustment on inventories is included in Cost of sales in the Consolidated Income Statement.

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- Definition The entire disclosure for inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 2 -IssueDate 2018-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=2&date=2018-03-01&anchor=sect_Disclosure&doctype=Standard -URIDate 2018-03-16 + Details
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