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Other assets and liabilities - Additional information (Details) - EUR (€) € in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Statement |  |
Value added tax receivables | € 475 | € 742
Current value added tax receivables | 315 | 557
Gas volume prepayments, current | 53 |
Gas volume prepayments, non-current | 651 |
Gas volume prepayments |  | 174
Non-current receivables for investing activities | 11 | 11
Excise duties and consumer taxes | 516 | 628
Current value added tax payables | 212 | 311
Liabilities for prepaid revenues and income | 323 | 420
Value of gas not withdrawn by customers due to triggering of take-or-pay clause |  | 148
Cautionary deposits | 261 | 265
within 1 year |  |
Statement |  |
Value of gas not withdrawn by customers due to triggering of take-or-pay clause | 65 |
Over 12 months |  |
Statement |  |
Value of gas not withdrawn by customers due to triggering of take-or-pay clause | 372 |
Gas and electricity |  |
Statement |  |
Cautionary deposits | 228 | 231
Engie SA |  |
Statement |  |
Current advances received | 62 | 64
Non-current advances received | 393 | 455
Egyptian state-owned partners |  |
Statement |  |
Current advances received | 546 | 1,228
Exploration & Production |  |
Statement |  |
Underlifting positions | 338 | 323
Overlifting imbalances | € 559 | € 917

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- Definition The amount of current payments received for goods or services to be provided in the future. [Refer: Advances received] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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