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Intangible Assets - Summary of Movement in VOBA (Detail) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Beginning balance | € 1,727 | [1] | € 1,559 |
Ending balance | 1,559 |  | 1,727 | [1]
VOBA [member] |  |  |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [Line Items] |  |  |  |
Beginning balance | 1,123 |  | 1,153 |
Amortization / depreciation through income statement | (112) |  | (135) |
Shadow accounting adjustments | (72) |  | 56 |
Impairment losses | (11) |  |  |
Net exchange differences | 24 |  | 49 |
Ending balance | € 952 |  | € 1,123 |
[1] | Amounts have been restated to reflect voluntary changes in accounting policies related to liability adequacy testing that was adopted by Aegon effective January 1, 2019. Refer to note 2.1.2 Voluntary changes in accounting policies for details about this change.

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- Definition The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B67 -Subparagraph d -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_vii&doctype=Standard -URIDate 2019-03-27 + Details
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