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Changes in accounting policies (Details Textuals) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Jan. 02, 2018 | Jan. 01, 2018
Negative change before taxes equity | € 259 |  |  |
Customer Acquisition Costs Capitalized | 60 |  |  |
Trade and other current receivables | 14,101 | € 15,421 |  | € 14,156
Decrease equity accounted investments | 6 |  |  |
Financial assets available-for-sale |  |  | € 207 |
Impairment loss | 1,701 | € 913 |  |
Increase (decrease) due to application of IFRS 15 [member] |  |  |  |
Decrease In Equity | 49 |  |  |
Customer Acquisition Costs Capitalized | 87 |  |  |
Trade and other current receivables |  |  |  | (372)
Increase (decrease) due to application of IFRS 15 [member] | Sales Method [Member] |  |  |  |
Decrease In Equity | 103 |  |  |
Increase Decrease Due To Application Of IFRS 9 [Member] |  |  |  |
Trade and other current receivables | 427 |  |  | € (427)
Decrease equity accounted investments | 31 |  |  |
Increase In Equity | 294 |  |  |
Increase Decrease in fair value Measurement | 681 |  |  |
Increase Decrease Due To Application Of IFRS 9 [Member] | Expected Credit Loss Model [Member] |  |  |  |
Impairment loss | € 356 |  |  |

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