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Goodwill and Intangible Assets - Summary of Net Book Value Goodwill and Intangible Assets (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | € 28,401 |
Ending balance | 29,493 | € 28,401
Cost [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 31,906 | 30,793
Hyperinflation restatement to 1 January 2018 | 272 |
Acquisitions of group companies | 1,307 | 5,267
Disposals of group companies | (2) |
Reclassification to held for sale | (283) | (2,311)
Reclassification from held for sale | 9 | 28
Additions | 203 | 154
Disposals | (15) | (79)
Currency retranslation | 4 | (1,946)
Hyperinflationary adjustment | 140 |
Ending balance | 33,541 | 31,906
Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (3,505) | (3,360)
Hyperinflation restatement to 1 January 2018 | (3) |
Amortisation/impairment for the year | (556) | (365)
Disposals | 14 | 79
Currency retranslation | 4 | 141
Hyperinflationary adjustment | (2) |
Ending balance | (4,048) | (3,505)
Goodwill [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 16,881 |
Ending balance | 17,341 | 16,881
Goodwill [member] | Cost [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 18,042 | 18,789
Hyperinflation restatement to 1 January 2018 | 244 |
Acquisitions of group companies | 470 | 2,557
Disposals of group companies | (1) |
Reclassification to held for sale | (227) | (2,228)
Reclassification from held for sale |  | 28
Currency retranslation | (151) | (1,104)
Hyperinflationary adjustment | 125 |
Ending balance | 18,502 | 18,042
Goodwill [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (1,161) | (1,165)
Currency retranslation |  | 4
Ending balance | (1,161) | (1,161)
Indefinite-life intangible assets [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 10,261 |
Ending balance | 11,035 | 10,261
Indefinite-life intangible assets [Member] | Cost [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 10,275 | 8,358
Hyperinflation restatement to 1 January 2018 | 25 |
Acquisitions of group companies | 825 | 2,622
Disposals of group companies | (1) |
Reclassification to held for sale | (55) | (82)
Reclassification from held for sale | 9 |
Currency retranslation | 156 | (623)
Hyperinflationary adjustment | 13 |
Ending balance | 11,247 | 10,275
Indefinite-life intangible assets [Member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (14) | (13)
Amortisation/impairment for the year | (198) |
Currency retranslation |  | (1)
Ending balance | (212) | (14)
Finite-life intangible assets [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 862 |
Ending balance | 762 | 862
Finite-life intangible assets [Member] | Cost [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 2,499 | 2,578
Hyperinflation restatement to 1 January 2018 | 3 |
Reclassification to held for sale | (1) | (1)
Additions | 201 | 153
Disposals |  | (78)
Currency retranslation | (15) | (153)
Hyperinflationary adjustment | 2 |
Ending balance | 2,689 | 2,499
Finite-life intangible assets [Member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (1,637) | (1,484)
Hyperinflation restatement to 1 January 2018 | (3) |
Amortisation/impairment for the year | (297) | (324)
Disposals |  | 78
Currency retranslation | 12 | 93
Hyperinflationary adjustment | (2) |
Ending balance | (1,927) | (1,637)
Software [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 397 |
Ending balance | 355 | 397
Software [Member] | Cost [Member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 1,090 | 1,068
Acquisitions of group companies | 12 | 88
Additions | 2 | 1
Disposals | (15) | (1)
Currency retranslation | 14 | (66)
Ending balance | 1,103 | 1,090
Software [Member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (693) | (698)
Amortisation/impairment for the year | (61) | (41)
Disposals | 14 | 1
Currency retranslation | (8) | 45
Ending balance | € (748) | € (693)

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- Definition The amount of additions to intangible assets other than goodwill, other than those acquired through business combinations. [Refer: Business combinations [member]; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The decrease in intangible assets and goodwill resulting from classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_ii&doctype=Standard -URIDate 2017-03-09 + Details
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