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Costs (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
DisclosureOfOperatingExpensesLineItems [Line Items] |  |  |
Net provisions for contingencies | € 886 | € 505 | € 644
Other expenses | 1,844 | 1,512 | 1,135
Purchase, services and other [Member] |  |  |
DisclosureOfOperatingExpensesLineItems [Line Items] |  |  |
Production costs - raw, ancillary and consumable materials and goods | 35,907 | 27,783 | 39,812
Production costs - services | 12,228 | 12,727 | 13,197
Operating leases and other | 1,684 | 1,672 | 2,205
Net provisions for contingencies | 886 | 505 | 644
Expenses for price variation on overliftling and underlifting operations | 145 | 240 | 278
Other expenses | 1,844 | 1,512 | 1,135
Purchase Services And Other Gross Of Capitalized Direct Costs Associated With Self Constructed Assets | 52,694 | 44,439 | 57,271
capitalized direct costs associated with self-constructed assets - tangible assets | (224) | (297) | (323)
capitalized direct costs associated with self-constructed assets - intangible assets | (9) | (18) | (100)
Total Purchase Services And Other Expenses | € 52,461 | € 44,124 | € 56,848

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