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Non-current and current inventories (Details) - EUR (€) € in Millions | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Non-current and current inventories |  |
Raw and auxiliary materials and consumables | € 950 | € 889
Consumables for infrastructure and facility maintenance of perforation activities | 1,477 | 1,451
Finished products and goods | 2,284 | 2,274
Work in progress | 8 |
Certificates and emission rights | 15 | 37
Inventories | € 4,734 | € 4,651

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- Definition A classification of current inventory representing the amount of goods that have completed the production process and are held for sale in the ordinary course of business. [Refer: Inventories] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 2 -IssueDate 2019-01-01 -Paragraph 37 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=2&code=ifrs-tx-2019-en-r&anchor=para_37&doctype=Standard -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 78 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_78_c&doctype=Standard -URIDate 2019-03-27 + Details
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