Investment Income - Summary of Investment Income (Detail) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of investment income [line items]
Interest income	€ 5,340	€ 5,426	€ 5,835
Dividend income	1,528	1,609	1,571
Rental income	99	114	125
Investment income	6,967	7,149	7,531
Fair value interest income	4,533	4,688	4,943
Financial assets impaired [member]
Disclosure of investment income [line items]
Interest income	53	70	€ 146
Aegon N.V [member]
Disclosure of investment income [line items]
Interest income from intercompany loans	12	16
Interest income from derivatives	1	(6)
Investment income	€ 13	€ 10

Disclosure of investment income line items.

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Interest income from derivatives,

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The amount of interest income on financial assets designated at fair value through profit or loss. [Refer: Interest income; Financial assets at fair value through profit or loss, designated upon initial recognition or subsequently]

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The amount of investment income, such as interest and dividends.

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The amount of dividends recognised as income. Dividends are distributions of profits to holders of equity investments in proportion to their holdings of a particular class of capital.

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The amount of income arising from interest.

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