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Other non-current liabilities | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Other Non-current Liabilities Explanatory [Abstract] |
Disclosure of other non-current liabilities [text block] | 33 Other non-current liabilities
(€ million) |  | December 31, 2017 |  | December 31, 2016
Fair value of derivatives financial instruments |  |  | 91 |  |  |  | 161 |
Income tax liabilities |  |  | 36 |  |  |  | 35 |
Other payables towards tax authorities |  |  | 9 |  |  |  | 9 |
Cautionary deposits |  |  | 255 |  |  |  | 265 |
Other payables |  |  | 45 |  |  |  | 51 |
Other liabilities |  |  | 1,043 |  |  |  | 1,247 |
|  |  | 1,479 |  |  |  | 1,768 |
Fair value related to derivative financial instruments is disclosed in note 34 — Derivative financial instruments. Cautionary deposits of  €255 million (€265 million at December 31, 2016) related for €215 million (€224 million at December 31 2016) to deposits from retail customers for the supply of gas and electricity. Other liabilities of  €1,043 million (€1,247 million at December 31, 2016) included advances received from Suez following a long-term agreement for supplying natural gas and electricity of  €584 million (€664 million at December 31, 2016). The current portion is described in note 28 — Other current liabilities. Liabilities with related parties are described in note 47 — Transactions with related parties.

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