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Trade and other receivables (Details 3) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 17,251 |  |
Allowance for doubtful accounts | (3,150) |  |
Net amount | € 14,101 | € 14,156 | € 15,421
Expected loss (%) |  |  |
Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 2,374 |  |
Allowance for doubtful accounts | (857) |  |
Net amount | € 1,517 |  |
Expected loss (%) | 36.10% |  |
Not-past due [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 1,231 |  |
Allowance for doubtful accounts | (20) |  |
Net amount | € 1,211 |  |
Expected loss (%) | 1.60% |  |
from 0 to 3 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 94 |  |
Allowance for doubtful accounts | (18) |  |
Net amount | € 76 |  |
Expected loss (%) | 19.10% |  |
from 3 to 6 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 48 |  |
Allowance for doubtful accounts | (18) |  |
Net amount | € 30 |  |
Expected loss (%) | 37.50% |  |
from 6 to 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 95 |  |
Allowance for doubtful accounts | (56) |  |
Net amount | € 39 |  |
Expected loss (%) | 58.90% |  |
over 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 906 |  |
Allowance for doubtful accounts | (745) |  |
Net amount | € 161 |  |
Expected loss (%) | 82.20% |  |
Retail customers – Gas & Power Retail [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 1,276 |  |
Retail customers – Gas & Power Retail [member] | Not-past due [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 575 |  |
Retail customers – Gas & Power Retail [member] | from 0 to 3 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 49 |  |
Retail customers – Gas & Power Retail [member] | from 3 to 6 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 34 |  |
Retail customers – Gas & Power Retail [member] | from 6 to 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 64 |  |
Retail customers – Gas & Power Retail [member] | over 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 554 |  |
Retail customers – Gas & Power Middle [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 883 |  |
Retail customers – Gas & Power Middle [member] | Not-past due [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 449 |  |
Retail customers – Gas & Power Middle [member] | from 0 to 3 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 43 |  |
Retail customers – Gas & Power Middle [member] | from 3 to 6 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 13 |  |
Retail customers – Gas & Power Middle [member] | from 6 to 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 29 |  |
Retail customers – Gas & Power Middle [member] | over 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 349 |  |
Retail customers – Gas & Power Other [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 215 |  |
Retail customers – Gas & Power Other [member] | Not-past due [member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 207 |  |
Retail customers – Gas & Power Other [member] | from 0 to 3 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 2 |  |
Retail customers – Gas & Power Other [member] | from 3 to 6 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 1 |  |
Retail customers – Gas & Power Other [member] | from 6 to 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | 2 |  |
Retail customers – Gas & Power Other [member] | over 12 months [Member] | Retail customers [Member] |  |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |  |
Retail customers – Gas & Power Gross amount | € 3 |  |

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