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Deposits from banks - Additional information (Details) € in Billions	1 Months Ended
	Mar. 31, 2024 EUR (€)
TLTRO
Disclosure of deposits from banks [Line Items]
Repayment of deposits from banks	€ 6.0

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- Definition

Disclosure of deposits from banks [Line Items]

+ References

No definition available.

+ Details

Name:	ing_DisclosureOfDepositsFromBanksLineItems
Namespace Prefix:	ing_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Repayment Of Deposits From Banks

+ References

No definition available.

+ Details

Name:	ing_RepaymentOfDepositsFromBanks
Namespace Prefix:	ing_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Details

Name:	ifrs-full_BorrowingsByNameAxis=ing_TargetedLongerTermRefinancingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: