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Deferred tax assets and liabilities - Changes in deferred tax liabilities and assets (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Deferred tax liabilities, gross |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | € 7,956 | € 10,169
Additions | 1,265 | 1,147
Deductions | (1,205) | (802)
Currency translation differences | 194 | 283
Change in scope of consolidation |  | (2,778)
Other changes | (97) | (100)
Deferred tax liability (asset) at end of year | 9,583 | 7,956
Deferred tax liabilities, gross | Changes in accounting policies (IFRS 15) |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year |  | 37
Deferred tax liabilities, gross | Increase (decrease) due to application of IFRS 16 |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | 1,470 |
Deferred tax liability (asset) at end of year |  | 1,470
Deferred tax liabilities, gross | After initial application |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | 9,426 | 10,206
Deferred tax liability (asset) at end of year |  | 9,426
Deferred tax assets, gross |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | (13,356) | (13,609)
Additions | (2,091) | (1,478)
Deductions | 1,407 | 1,523
Currency translation differences | (182) | (278)
Change in scope of consolidation |  | 813
Other changes | (75) | (90)
Deferred tax liability (asset) at end of year | (15,767) | (13,356)
Deferred tax assets, gross | Changes in accounting policies (IFRS 15) |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year |  | (237)
Deferred tax assets, gross | Increase (decrease) due to application of IFRS 16 |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | (1,470) |
Deferred tax liability (asset) at end of year |  | (1,470)
Deferred tax assets, gross | After initial application |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | (14,826) | (13,846)
Deferred tax liability (asset) at end of year |  | (14,826)
Accumulated impairment |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | 5,741 | 5,262
Additions | 1,161 | 253
Deductions | (174) | (43)
Currency translation differences | 34 | 71
Other changes | (18) | 198
Deferred tax liability (asset) at end of year | 6,744 | 5,741
Accumulated impairment | After initial application |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | 5,741 | 5,262
Deferred tax liability (asset) at end of year |  | 5,741
Deferred tax assets net of impairment before offsetting |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | (7,615) | (8,347)
Additions | (930) | (1,225)
Deductions | 1,233 | 1,480
Currency translation differences | (148) | (207)
Change in scope of consolidation |  | 813
Other changes | (93) | 108
Deferred tax liability (asset) at end of year | (9,023) | (7,615)
Deferred tax assets net of impairment before offsetting | Changes in accounting policies (IFRS 15) |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year |  | (237)
Deferred tax assets net of impairment before offsetting | Increase (decrease) due to application of IFRS 16 |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | (1,470) |
Deferred tax liability (asset) at end of year |  | (1,470)
Deferred tax assets net of impairment before offsetting | After initial application |  |
Deferred tax assets and liabilities |  |
Deferred tax liability (asset) at beginning of year | € (9,085) | (8,584)
Deferred tax liability (asset) at end of year |  | € (9,085)

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- Definition Schedule disclosing information related to details of deferred tax liabilities line items. + References No definition available. + Details
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