Valuation results and net trading income - Summary of valuation results and net trading income (Details) - EUR (€) € in Millions	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Valuation results and net trading income [Abstract]
Securities trading results	€ (498)	€ 798
Derivatives trading results	854	(654)
Other trading results	31	62
Change in fair value of derivatives relating to
- fair value hedges	(3,463)	(627)
- cash flow hedges (ineffective portion)	25	2
- other non-tradingderivatives	9,972	265
Change in fair value of assets and liabilities (hedged items)	3,490	638
Valuation results on assets and liabilities designated at FVPL (excluding trading)	138	(36)
Foreign exchange transactions results	(1,337)	763
Valuation results and net trading income	€ 9,212	€ 1,212

The gains (losses) on hedged items in fair value hedges, which are attributable to the hedged risk. [Refer: Fair value hedges [member]]

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The gains (losses) on hedging instruments in fair value hedges. [Refer: Fair value hedges [member]]

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The gains (losses) on the ineffective portion of cash flow hedges recognised in profit or loss. [Refer: Cash flow hedges [member]]

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The amount of trading income (expense) that the entity does not separately disclose in the same statement or note. [Refer: Trading income (expense)]

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The amount of income (expense) relating to trading assets and liabilities.

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The amount of trading income (expense) relating to derivative financial instruments. [Refer: Derivatives [member]; Trading income (expense)]

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The amount of trading income (expense) relating to foreign exchange contracts. [Refer: Trading income (expense)]

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Change in fair value of derivatives relating.

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Gains losses on assets and liabilities designated at fair value through profit or loss excluding trading.

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Gains on change in fair value of other non trading derivatives.

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Trading income (expense) on securities.

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Valuation results and net trading income.

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