Name:	ifrs-full_DisclosureOfReservesWithinEquityLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The increase (decrease) in the number of shares outstanding. [Refer: Number of shares outstanding]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 79
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_79_a_iv&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncreaseDecreaseInNumberOfSharesOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The number of shares that have been authorised and issued, reduced by treasury shares held. [Refer: Treasury shares]

Name:	ifrs-full_NumberOfSharesOutstanding
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

An entity’s own equity instruments, held by the entity or other members of the consolidated group.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-Subparagraph e
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 32
-IssueDate 2024-01-01
-Paragraph 34
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=32&code=ifrs-tx-2024-en-r&anchor=para_34&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_TreasuryShares
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Decrease Through Share-based Payment Transactions, Equity

No definition available.

Name:	ing_DecreaseThroughShareBasedPaymentTransactionsEquity
Namespace Prefix:	ing_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Decrease Through Share-based Payment Transactions, Shares

No definition available.

Name:	ing_DecreaseThroughShareBasedPaymentTransactionsShares
Namespace Prefix:	ing_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Increase (Decrease) Through Treasury Share Transactions, Excluding Share-based Payment Transactions

No definition available.

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

Increase Through Share-based Payment Transactions, Equity

No definition available.

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

Increase Through Share-based Payment Transactions, Shares

No definition available.

Name:	ing_IncreaseThroughShareBasedPaymentTransactionsShares
Namespace Prefix:	ing_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Share Buyback Programme, Amount

No definition available.

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

Share Buyback Programme, Cancelled, Amount

No definition available.

Name:	ing_ShareBuybackProgrammeCancelledAmount
Namespace Prefix:	ing_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Share Buyback Programme, Cancelled, Shares

No definition available.

Name:	ing_ShareBuybackProgrammeCancelledShares
Namespace Prefix:	ing_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Share Buyback Programme, Shares

No definition available.