ING Groep (ING) 6-K 6 Aug 21 Current report (foreign) Financial data

Document and entity information

Document and entity information	6 Months Ended
	Jun. 30, 2021
Document And Entity Information [Line Items]
Document Type	6-K
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Entity Registrant Name	ING GROEP NV
Entity Central Index Key	0001039765
Current Fiscal Year End Date	--12-31
Entity Address Address Line1	Bijlmerdreef 106
Entity Address City Or Town	Amsterdam
Entity address country	NL
Entity Address Postal Zip Code	1102 CT
Entity File Number	001-14642

Condensed consolidated statemen

Condensed consolidated statement of financial position - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Assets
Cash and balances with central banks	€ 121,331	€ 111,087
Loans and advances to banks	26,198	25,364
Financial assets at fair value through profit or loss	121,402	103,370
Financial assets at fair value through other comprehensive income	33,016	35,895
Securities at amortised cost	49,467	50,587
Loans and advances to customers	607,777	593,970
Investments in associates and joint ventures	1,461	1,475
Property and equipment	2,631	2,841
Intangible assets	1,315	1,394
Current tax assets	679	419
Deferred tax assets	1,352	1,596
Other assets	7,743	5,893
Assets held for sale	1,278
Total assets	975,650	933,891
Liabilities
Deposits from banks	89,134	78,098
Customer deposits	620,564	609,517
Financial liabilities at fair value through profit or loss	87,141	82,781
Current tax liabilities	290	342
Deferred tax liabilities	356	343
Provisions	756	691
Other liabilities	13,652	11,609
Liabilities held for sale	2,243
Debt securities in issue	91,840	82,065
Subordinated loans	14,791	15,805
Total liabilities	920,767	881,250
Equity 12
Share capital and share premium	17,144	17,128
Other reserves	1,870	2,342
Retained earnings	34,882	32,149
Shareholders' equity (parent)	53,896	51,619
Non-controlling interests	987	1,022
Total equity	54,883	52,640
Total liabilities and equity	€ 975,650	€ 933,891

Condensed consolidated statem_2

Condensed consolidated statement of profit or loss - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Continuing operations
Interest income using effective interest rate method	€ 9,313	€ 10,935
Other interest income	1,368	1,026
Total interest income	10,680	11,962
Interest expense using effective interest rate method	(2,534)	(4,160)
Other interest expense	(1,125)	(925)
Total interest expense	(3,659)	(5,085)
Net interest income	7,021	6,877
Net fee and commission income	1,710	1,506
Valuation results and net trading income	1,212	(4)
Investment income	49	40
Other income	184	269
Total income	10,175	8,688
Addition to loan loss provisions	131	1,998
Staff expenses	2,938	2,923
Other operating expenses	2,621	2,703
Total expenses	5,691	7,623
Result before tax from continuing operations	4,484	1,065
Taxation	1,265	438
Net result from continuing operations	3,219	626
Net result (before non-controlling interests)	3,219	626
Net result attributable to Non-controlling interests	59	36
Net result attributable to shareholders of the parent	€ 3,161	€ 591
Earnings per ordinary share
Basic earnings per ordinary share	€ 0.81	€ 0.15
Diluted earnings per ordinary share	0.81	0.15
Earnings per ordinary share from continuing operations
Basic earnings per ordinary share from continuing operations	0.81	0.15
Diluted earnings per ordinary share from continuing operations	€ 0.81	€ 0.15

Condensed consolidated statem_3

Condensed consolidated statement of comprehensive income - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Consolidated statement of comprehensive income [abstract]
Net result (before non-controlling interests)	€ 3,219	€ 626
Items that will not be reclassified to the statement of profit or loss:
Realised and unrealised revaluations property in own use	(3)	11
Remeasurement of the net defined benefit asset/liability	29	84
Net change in fair value of equity instruments at FVOCI	90	(311)
Change in fair value of own credit risk of financial liabilities at FVPL	17	11
Items that may subsequently be reclassified to the statement of profit or loss:
Net change in fair value of debt instruments at FVOCI	(108)	(81)
Realised gains/losses on debt instruments at FOVCI reclassified to the statement of profit or loss	(30)	(27)
Changes in cash flow hedge reserve	(673)	644
Exchange rate differences	158	(691)
Share of other comprehensive income of associates and joint ventures and other income	(2)	2
Total comprehensive income	2,698	268
Comprehensive income attributable to:
Non-controlling interests	(31)	134
Equity holders of the parent	2,730	135
Total comprehensive income	€ 2,698	€ 268

Condensed consolidated statem_4

Condensed consolidated statement of changes in equity - EUR (€) € in Millions	Total	Share capital and share premium [Member]	Other reserves [Member]	Retained earnings [Member]	Shareholders' equity (parent) [Member]	Non-controlling interests [Member]
Balance at Dec. 31, 2019	€ 51,889	€ 17,117	€ 4,013	€ 29,866	€ 50,996	€ 893
Net change in fair value of equity instruments at fair value through other comprehensive income	(311)		(310)	(2)	(312)	0
Net change in fair value of debt instruments at fair value through other comprehensive income	(81)		(76)		(76)	(5)
Realised gains/losses on debt instruments at fair value through other comprehensive income reclassified to the statement of profit or loss	(27)		(27)		(27)	(1)
Changes in cash flow hedge reserve	644		501		501	144
Realised and unrealised revaluations property in own use	11		9	2	11	0
Remeasurement of the net defined benefit asset/liability	84		84		84
Exchange rate differences and other	(691)		(650)		(650)	(41)
Share of other comprehensive income of associates and joint ventures and other income	2		54	(52)	2
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss	11		11		11
Total amount recognised directly in other comprehensive income net of tax	(358)		(404)	(52)	(456)	98
Net result	626			591	591	36
Total comprehensive income net of tax	268		(404)	539	135	134
Dividends	(3)					(3)
Changes in treasury shares	6		6		6
Employee stock option and share plans	12	11		1	12	0
Changes in the composition of the group and other changes	(1)					(1)
Balance at Jun. 30, 2020	52,171	17,128	3,616	30,406	51,149	1,022
Balance at Dec. 31, 2020	52,640	17,128	2,342	32,149	51,619	1,022
Net change in fair value of equity instruments at fair value through other comprehensive income	90		89	0	89	1
Net change in fair value of debt instruments at fair value through other comprehensive income	(108)		(106)		(106)	(1)
Realised gains/losses on debt instruments at fair value through other comprehensive income reclassified to the statement of profit or loss	(30)		(30)		(30)	0
Changes in cash flow hedge reserve	(673)		(577)		(577)	(96)
Realised and unrealised revaluations property in own use	(3)		(6)	3	(3)	0
Remeasurement of the net defined benefit asset/liability	29		29		29
Exchange rate differences and other	158		151		151	6
Share of other comprehensive income of associates and joint ventures and other income	(2)		(37)	35	(2)
Change in fair value of own credit risk of financial liabilities at fair value through profit or loss	17		17		17
Total amount recognised directly in other comprehensive income net of tax	(521)		(469)	38	(431)	(90)
Net result	3,219			3,161	3,161	59
Total comprehensive income net of tax	2,698		(469)	3,198	2,730	(31)
Dividends	(472)			(468)	(468)	(4)
Changes in treasury shares	(4)		(4)		(4)
Employee stock option and share plans	19	16		3	19	0
Balance at Jun. 30, 2021	€ 54,883	€ 17,144	€ 1,870	€ 34,882	€ 53,896	€ 987

Condensed consolidated statem_5

Condensed consolidated statement of cash flows - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Result before tax	€ 4,484	€ 1,065
Adjusted for: - Depreciation and amortisation	418	402
- Addition to loan loss provisions	131	1,998
- Other non-cash items in Result before tax	(624)	1,285
Taxation paid	(1,107)	(1,149)
Changes in: - Net change in Loans and advances to/from banks, not available/payable on demand	7,944	51,912
- Net change in Trading assets and Trading liabilities	(5,159)	3,208
- Loans and advances to customers	(13,380)	(9,865)
- Customer deposits	13,128	34,416
- Other	(9,028)	(5,849)
Net cash flow from/(used in) operating activities	(3,193)	77,422
Cash flows from investing activities
- Associates and joint ventures	(31)	(10)
- Financial assets at fair value through other comprehensive income	(9,381)	(13,095)
- Securities at amortised cost	(25,190)	(16,306)
- Property and equipment	(84)	(144)
- Other investments	(94)	(165)
- Associates and joint ventures	37	12
- Financial assets at fair value through other comprehensive income	11,802	8,523
- Securities at amortised cost	26,185	11,547
- Property and equipment	9	4
- Other investments	0	8
Net cash flow from/(used in) investing activities	3,253	(9,627)
Cash flows from financing activities
Proceeds from debt securities	42,208	48,565
Repayments of debt securities	(32,233)	(46,335)
Proceeds from issuance of subordinated loans	491	2,165
Repayments of subordinated loans	(1,455)	(2,608)
Repayments of principal portion of lease liabilities	(144)	(132)
Purchase/sale of treasury shares	(4)	6
Dividends paid	(472)	(3)
Other financing	2	0
Net cash flow from/(used in) financing activities	8,395	1,658
Net cash flow	8,455	69,453
Cash and cash equivalents at beginning of year	111,566	54,031
Effect of exchange rate changes on cash and cash equivalents	(357)	(192)
Cash and cash equivalents at end of the reporting period	€ 119,663	€ 123,292

Condensed consolidated statem_6

Condensed consolidated statement of cash flows (Parenthetical) - EUR (€) € in Millions		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Statement of Cash Flows [Line Items]
Treasury bills and other eligible bills		€ 39	€ 170
Deposits from banks/Loans and advances to banks		(1,706)	4,151
Cash and balances with central banks		121,331	118,971
Cash and cash equivalents at end of the reporting period		119,663	123,292
Interest received		10,766	12,287
Interest paid		(4,674)	(5,504)
Interest received (paid)		6,093	6,784
Dividend received	[1]	63	23
Dividend paid		€ (472)	€ (3)
[1]	Includes dividends received as recognized within Investment Income, from equity securities included in the Financial assets at fair value through profit or loss, Financial assets at fair value through OCI, and from Investments in associates and joint ventures. Dividend paid and received from trading positions have been included.

Basis of preparation and accoun

Basis of preparation and accounting policies	6 Months Ended
	Jun. 30, 2021
Basis of preparation and accounting policies [abstract]
Basis for preparation of accounting policies	1 1.1 Reporting entity and authorisation of the Condensed consolidated interim financial statements ING Groep N.V. Amsterdam, the Netherlands . Commercial Register of Amsterdam, number 33231073. These Condensed consolidated interim financial period ended 30 June 2021, comprise ING Groep N.V. (the Parent referred to as ING Group. ING Group is a global financial institution with a strong European base, offering a wide range of retail and wholesale banking services to customers in over 40 The ING Group Condensed consolidated interim financial statements, as at and for the six month period ended 30 June 2021, were authorised for issue in accordance with a resolution of 2021. 1.2 Basis of preparation of the Condensed consolidated interim financial statements The ING Group Condensed consolidated interim financial statements have been prepared in accordance with International Accounting Standard 34 ‘ Interim Financial Reporting’. The accounting policies used to prepare the Condensed consolidated interim financial statements are consistent with International Financial Reporting Standards as issued by the International Accounting Standards Board (IFRS-IASB) and are consistent with those set out in the notes to the 2020 Consolidated financial statements as included in the 20-F of ING Group except for the adoption of a number of amendments effective in 2021 as set out in ‘Changes to accounting policies’. The Condensed consolidated interim financial statements should be read in conjunction with Consolidated financial statements as included in the Form 20-F. The ING Group Condensed consolidated interim financial statements have been prepared on a going concern basis. The Condensed consolidated interim financial statements are presented in euros and rounded to the nearest million, unless stated otherwise. Amounts may not add up due to rounding. 1.2.1 Presentation of Risk management disclosures Certain disclosures of the nature and extent of risks related to financial instruments as disclosed in the 2020 ING Group Consolidated financial statements and included in the 2020 ING Group Annual are updated and take into account Covid-19 developments in the first six months of 2021. Although these disclosures are included in the ‘Risk management’ Group Condensed consolidated interim financial statements. The disclosures are indicated by the symbol (*). Chapters, paragraphs, graphs or tables within the risk management section that are indicated with this symbol in the respective headings or table header are considered to be an integral part of the Condensed interim financial statements. 1.2.2 Reconciliation between IFRS-EU and IFRS-IASB The 2020 ING Group Consolidated financial statements and the 2021 ING Group Condensed interim financial statements are prepared in accordance with IFRS-EU. IFRS-EU refers to International Financial Reporting Standards (‘IFRS’) as adopted by the European Union (EU), including the decisions with regard to the options available under IFRS as adopted by the EU. IFRS-EU differs from IFRS-IASB in respect of certain paragraphs in IAS 39 ‘Financial Instruments: Recognition and Measurement’ accounting for portfolio hedges of interest rate risk. Under IFRS-EU, ING Group applies fair value hedge accounting for portfolio hedges of interest rate risk (fair value macro hedges) in accordance with the EU carve-out version of IAS 39. Under hedge accounting may be applied, in respect of fair value macro hedges, to core deposits and hedge ineffectiveness is only recognised when the revised estimate of the amount of cash flows in scheduled time buckets falls below the original designated amount of that bucket and is not recognised when the revised amount of cash flows in scheduled time buckets is more than the original designated hedge accounting for fair value macro hedges cannot be applied to core deposits and ineffectiveness arises whenever the revised estimate of the amount of cash flows in scheduled time buckets is either more or less than the original designated amount of that bucket. This information is prepared by reversing the hedge accounting impacts that are applied under the EU ‘carve- out’ version of IAS 39. Financial information under IFRS-IASB accordingly possibility that had ING Group applied IFRS-IASB as its primary alternative hedge strategies where those alternative hedge strategies could have qualified for IFRS-IASB compliant hedge accounting. These decisions could have resulted in different shareholders’ equity and net result amounts compared to those indicated in this Condensed consolidated interim financial Form 6-K. In the first six months of 2021, interest yield increased resulting in a positive EU IAS39 carve out (EUR 956 (EUR -493 trading income’ in the statement of profit or loss. between IFRS-EU and IFRS-IASB is included below. Reconciliation net result under IFRS-EU and IFRS-IASB 1 January to 30 June in EUR million 2021 2020 In accordance with IFRS-EU (attributable to the shareholders of 2,464 969 Adjustment of the EU IAS 39 carve-out 956 -493 Tax effect 1 -260 115 Effect of adjustment after tax 697 -379 In accordance with IFRS-IASB (attributable to the shareholders of the parent) 3,161 591 Non-controlling interests 59 36 In accordance with IFRS-IASB Total 3,219 626 1 includes the effect of changes in tax rate. Reconciliation shareholders’ equity under IFRS-EU and IFRS-IASB in EUR million 30 June 2021 31 December 2020 In accordance with IFRS-EU (attributable to the shareholders of 56,222 54,637 Adjustment of the EU IAS 39 carve-out -3,132 -4,081 Tax effect 805 1,063 Effect of adjustment after tax -2,327 -3,018 Shareholders’ equity 53,896 51,619 Non-controlling interests 987 1,022 In accordance with IFRS-IASB Total 54,883 52,640 1.3 Impact of Covid-19 After the outbreak of the Covid-19 pandemic in 2020, schemes for borrowers impacted by Covid-19. As at 30 June 2021 ING Group had approximately EUR 2.0 of loans outstanding under these programs (31 December 2020: EUR 1.5 In Wholesale Banking the main schemes are being Scheme (“GO-C”)), in France (state-guarantee scheme Bpifrance) and Germany (guaranteed by KfW). In Retail Banking these facilities include in the Netherlands the SME Credit the small credit facility (“Klein Krediet Corona” or KKC) for self-employed individuals. In 2020 ING Group started an initiative with European Investment Bank to lend nearly EUR 800 favorable terms to Dutch small and medium-sized enterprises that are affected by the economic impact of Covid-19 and loans under this program have been recognized on the balance sheet of ING as from 2021. Similar facilities are also offered by ING Group in other countries, mainly in Belgium and provided in 2020 loans under the state guarantee scheme GS1 which establishes risk sharing and the government. It applies to new loans to non-financial companies, SME certain conditions. ING Bank Poland signed an agreement with BGK support clients with individual guarantee schemes, provided by BGK as a collateral (equivalent to a state guarantee). Loans that have been originated under the above programs have been recognized on the consolidated statement of financial position of ING Group. Depending on the scheme, integral or non-integral to the origination of these loans. Following this, the guarantees are either reflected in the expected credit losses (ECL) associated with these loans or as separate reimbursement asset, respectively. In either case, such guarantees have a similar impact on the statement of profit or loss and both reduce amount presented as ‘addition to loan loss provisions’. In 2020 governments in almost all countries where ING Retail bank is active adopted measures providing for payment holidays to private individuals and small business loans. In the six month period most of these payment holiday programs expired. As at 30 June 2021, approximately 159 were granted payment holidays in the context of the Covid-19 pandemic (down from 196 December 2020 due to reimbursements and prepayments). The total exposure of loans for which a payment holiday is granted amounts to EUR 17.5 19.4 which 96 % has expired. The modification of contractual terms of loans subject to payment holiday arrangements does not automatically result in derecognition of the financial assets. Where applicable, financial asset has been recalculated as the present value of the renegotiated or modified contractual cash flows, discounted at the original effective interest rate and a gain or loss was recognized. This did not have a material impact on the profit or loss statement of ING Group. As a result of the economic effects of Covid-19 estimation uncertainty and level of management judgement increased compared to before the Covid-19 pandemic in certain areas, such as the impairment assessment loan loss provisions (including the need for management adjustments). Please ‘Significant judgements and critical accounting estimates and assumptions’. 1.4 Changes to accounting policies and presentation ING Group has consistently applied its accounting policies to all periods presented in consolidated interim financial statements, 1.4.1 Changes in IFRS effective in 2021 The following amended standards became effective in the current reporting period: ● Amendments to IFRS 9 ‘Financial Instruments’, IAS 39 ‘Financial Instruments: Recognition and Measurement’, IFRS 16 ‘Leases’, Disclosures’: ‘IBOR Reform and its Effects on Financial Reporting – Phase 2’ (issued in August 2020); ● Amendments to IFRS 16 ‘Leases’: ‘Covid-19-Related Rent Concessions’ (issued in May 2020). The IBOR Reform – Phase 2 amendments relate mainly to accounting for changes in the basis for determining the contractual cash flows of financial assets and liabilities due to the IBOR accounting when an existing benchmark rate is reformed or replaced with an alternative risk free rate. Specifically, Phase 2 amendments require that the effective interest rate adjusted, and hedge accounting will continue on transition to risk free rates, but only to the extent that the modifications made to financial instruments are those necessary new basis for calculating cash flows is ‘economically equivalent’ to the previous basis. By applying these mandatory amendments, ING Group avoids recognising modification gains and losses on would otherwise be required in the absence of Phase 2 amendments. accounting discontinuations when modifying both hedged items and hedging the IBOR reform that would otherwise be required in the absence of Phase 2 amendments. Management’ section – ‘Market Risk’ for more details. The amendments to IFRS 16 ‘Leases’ provide lessees with an related rent concession is a lease modification. As ING Group did not receive rent concessions as a lessee, these amendments had no impact on the accounting policies ING Group has not early adopted any standard, interpretation or amendment which has been issued, but is yet effective. For further information, reference is made to Note 1 ‘Basis of preparation and accounting policies’, paragraph 1.4.2 ‘Upcoming changes in IFRS after 2020’ in the 2020 ING Group Consolidated 1.5 Significant judgements and critical accounting estimates and assumptions The preparation of the Condensed consolidated interim financial statements requires management to make judgements in the process of applying its accounting policies estimates and assumptions affect the reported amounts of the assets and liabilities and contingent assets and contingent liabilities at the balance sheet date, as well as reported income and expenses for the period. The actual outcome may differ from these estimates. The process of setting assumptions is subject to internal control procedures and approvals. Consistent with Note 1.5 ‘Significant judgements and critical accounting estimates and assumptions’ of 2020 ING Group Consolidated financial statements, the following areas continue to require management to make significant judgements and use critical accounting estimates and assumptions based on the and financial data that may change in future periods: ● Loan loss provisions (financial assets); ● The determination of the fair values of financial assets and liabilities; ● Impairment assessment of non-financial assets; ● Impairment assessment of an investment in associate; ● Provisions; and ● Accounting for Targeted Of particular note to the six month period ended 30 June areas of Loan loss provisions and TLTRO. For Loan loss provisions this resulted in Covid-19 related management adjustment to the model-based Expected Credit Losses. The Covid-19 management adjustment amounts to EUR 595 June 2021 and relates to Payment Holidays and other government support measures (EUR 260 time lag in defaults materialising (EUR 296 39 million). This is a decrease of EUR 68 Under the TLTRO III program, it is ING Group’s policy to recognise the conditional interest receivable only when ING has a reasonable expectation that the lending growth targets will be met. ING Group interprets reasonable expectations as highly probable, i.e. the probability of meeting the lending the probability that it will not. As a result, if interest income is recognised during the expectation of meeting the targets, there should be only a limited possibility that the reversed in future periods. For details on the conditions of the TLTRO III programme and amount of interest income recognised in the reporting period, refer to Note 7 ‘Deposits from banks’ and Note 12 ‘Net interest income’ respectively.

Financial assets at fair value

Financial assets at fair value through profit or loss	6 Months Ended
	Jun. 30, 2021
Financial assets at fair value through profit or loss [abstract]
Financial assets at fair value through profit or loss	2 Financial assets at fair value through profit or loss in EUR million 30 June 2021 31 December 2020 Trading assets 50,652 51,356 Non-trading derivatives 2,112 3,583 Designated at fair value through profit or loss 5,421 4,126 Mandatorily measured at fair value through profit or loss 63,217 44,305 121,402 103,370 Trading assets include assets that are classified under IFRS as Trading, but are closely related to servicing the needs of the clients of ING Group. ING offers institutional clients, corporate clients, and governments, products that are traded on the financial markets. A significant part of the derivatives in the trading portfolio is related to servicing corporate clients in their risk management to hedge for example currency or interest rate exposures. In addition, ING provides its customers access to equity and debt markets for issuing their own equity or debt securities (securities underwriting). (Reverse) repurchase transactions Financial assets at fair value through profit or loss include securities lending transactions which were not derecognised, because ING Group continues to be exposed to substantially all risks and rewards of the transferred financial asset. For repurchase agreements the gross amount of trading assets must be considered together with the gross amount of related trading liabilities, which are presented separately on the statement of financial position since IFRS does not always allow netting of these positions in the statement of financial position. ING Group’s exposure to (reverse) repurchase transactions is included in the following lines in the statement of financial position: Exposure to (reverse) repurchase agreements in EUR million 30 June 2021 31 December 2020 Reverse repurchase transactions Loans and advances to banks 4,463 4,869 Loans and advances to customers 1 624 Trading assets, loans and receivables 9,939 10,947 Loans and receivables measured at mandatorily fair value through 60,124 41,735 74,526 58,175 Repurchase transactions Deposits from banks 4,666 1,971 Trading liabilities, funds on deposit 6,658 5,787 Funds entrusted measured at designated at fair value through 51,457 41,177 62,781 48,935

Financial assets at fair valu_2

Financial assets at fair value through other comprehensive income	6 Months Ended
	Jun. 30, 2021
Financial assets at fair value through other comprehensive income [Abstract]
Financial assets at fair value through other comprehensive income	3 Financial assets at fair value through other comprehensive income by type in EUR million 30 June 2021 31 December 2020 Equity securities 2,434 1,862 Debt securities 1 29,693 32,977 Loans and advances 1 889 1,056 33,016 35,895 1 Debt securities include an amount of EUR -12 -12 -1 million (31 December 2020: EUR -2 Exposure to equity securities Equity securities designated as at fair value through other comprehensive Carrying value Dividend income 30 June 2021 31 December 2020 1 January to 30 June in EUR million 2021 2020 Investment in Bank of Beijing 1,748 1,662 Other Investments 686 200 15 2 2,434 1,862 15 2 For strategic equity securities, ING decided to apply the option to irrevocably designate these investments at fair value through other comprehensive income, instead of the IFRS 9 default measurement of fair value through profit or loss. As at 30 June 2021 ING holds approximately 13 % (31 December 2020: 13 %) bank listed on the stock exchange of Shanghai. As per regulatory requirements set by China Banking and Insurance Regulatory Commission, ING, as a shareholder holding more than 5 % or more of the shares, is required to supply additional capital when necessary. No six months of 2021 (2020: nil ). Changes in fair value through other comprehensive income The following table presents changes in financial assets at fair value through other comprehensive income. Changes in fair value through other comprehensive income financial assets FVOCI equity securities FVOCI debt instruments 1 Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance as at 1 January 1,862 2,306 34,033 32,163 35,895 34,468 Additions 504 13 8,877 16,936 9,381 16,949 Amortisation -7 -9 -7 -9 Transfers -16 -107 0 -16 -107 Changes in unrealised revaluations 2 9 -283 -694 520 -685 237 Impairments -1 -2 -1 -2 Reversals of impairments 1 -4 1 -4 Disposals and redemptions -1 -13 -11,800 -14,557 -11,802 -14,571 Exchange rate differences 76 -53 171 -1,017 247 -1,070 Changes in the composition of the group and other changes 0 -0 2 2 2 2 Closing balance 2,434 1,862 30,582 34,033 33,016 35,895 1 Fair value through other comprehensive income debt instruments includes both debt securities and loans and advances. 2 Changes in unrealised revaluations of FVOCI debt instruments include changes on hedged items which are recognised in the statement of profit or loss. Reference is made to Note 11 ‘Equity’ for details on the changes in revaluation reserve. In the first six months of 2021, changes in unrealised revaluations of debt securities decreased by 694 million as a result of increased interest rates (2020: EUR 520 In 2020, changes in unrealised revaluations of equity securities decreased mainly revaluation of the stake in Bank of Bejing following a decline in share price (EUR -339

Loans and advances to customers

Loans and advances to customers	6 Months Ended
	Jun. 30, 2021
Loans and advances to customers [abstract]
Loans and advances to customers	4 Loans and advances to customers by type in EUR million 30 June 2021 31 December 2020 Loans to, or guaranteed by, 41,936 41,502 Loans secured by mortgages 356,786 352,130 Loans guaranteed by credit institutions 5,810 5,201 Personal lending 27,138 27,794 Corporate loans 181,453 173,121 613,123 599,749 Loan loss provisions -5,347 -5,779 607,777 593,970 For details on credit quality and loan loss provisioning, refer to ‘Risk management – Loan loss paragraph.

Investment in associates and jo

Investment in associates and joint ventures	6 Months Ended
	Jun. 30, 2021
Investment in associates and joint ventures [Abstract]
Investment in associates and joint ventures	5 Investments in associates and joint ventures in EUR million 30 June 2021 Interest held (%) Fair value of listed invest- ments Balance sheet value Total assets Total liabilities Total income Total expenses TMBThanachart Bank Public Company Limited 23 652 1,166 47,077 41,631 442 352 Other investments in associates and joint ventures 295 1,461 Investments in associates and joint ventures in EUR million 31 December 2020 Interest held (%) Fair value of listed invest- ments Balance sheet value Total assets Total liabilities Total income Total expenses TMBThanachart Bank Public Company Limited 23 653 1,202 50,123 44,597 1,388 1,093 Other investments in associates and joint ventures 273 1,475 The reporting dates of certain associates and joint ventures can differ from the reporting date of the Group, but by no more than three months. TMBThanachart Bank Public Company Limited ING Group has a 23 % investment in TMBThanachart Bank Public Company Limited (hereafter: TTB), a bank listed on the Stock Exchange of Thailand. TTB is providing products and services Medium Enterprise (SME), and Retail customers. TTB is accounted for as an investment in associate based on the size of ING shareholding and representation on the Board. IFRS requires to test its investment in TTB for impairment when there is an indication that impairment might exist. Impairment testing In the first half of 2021, the fair value of ING’s investment in TTB shows a significant and prolonged decline below purchase cost. This indicator triggered ING to perform an impairment test on the recoverability of the investment of TTB. The impairment test performed at 30 June 2021 did no t result in an impairment. Methodology The recoverable amount is determined as the higher of the fair value less costs of disposal and Value in Use (‘VIU’). Fair value less costs of disposal is based on observable cash flow projections based on management’s best estimates. VIU is derived using a Dividend Discount Model (DDM) where distributable equity, i.e. future earnings available to ordinary shareholders, is used as a proxy for future cash flows. The valuation looks at expected cash flows into perpetuity resulting in two main components to the VIU calculation: i) the estimation of future earnings over a 5 year forecast period; and ii) the terminal value being the extrapolation of earnings into perpetuity applying a rate. The earnings that are used for extrapolation represent the stable long term financial results and position of TMB, i.e. a steady state. The terminal value comprises the majority of the Key assumptions used in the VIU calculation as at 30 June 2021 The value in use is determined using a valuation model which is The key assumptions, i.e. those to which the overall result is most sensitive to, are the following: ● Expected future earnings of TTB: based on forecasts derived from broker consensus over the short to medium term and TTB observable targets for steady state earnings into perpetuity. A capital maintenance charge is applied, which is management’s forecast of the earnings that need to be withheld in order for TTB to meet target regulatory requirements over the forecast period; ● Terminal growth rate: 2.15 % (2020: 1.6 %), consistent with current long term government bond yield in Thailand as a proxy for a risk-free rate; ● Discount rate (cost of equity): 9.36 % (2020: 8.49 %), based on the capital asset pricing model (CAPM) calculated for TTB, using current market data. At 30 June 2021 the model was tested for reasonably possible changes to key assumptions in the model. This reflects the sensitivity of the VIU to each key assumption on its own and it is favourable and/or unfavourable change may occur at the same time. Holding the other key assumptions constant, a reduction in all of the forecasted annual cash flows, including terminal value, of 15.4 % would reduce the recoverable amount to the carrying amount. A 525 bps decrease in long term growth rate or a 143 bps increase in the discount rate would cause the VIU to equal the carrying amount. Other investments in associates and joint ventures Included in Other investments in associates and joint ventures are mainly financial services technology funds or vehicles operating predominantly in Europe. Other investments in associates and joint ventures represents a number of associates and joint ventures that are individually not significant to ING Group. Changes in Investments in associates and joint ventures in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 1,475 1,790 Additions 31 24 Revaluations 4 -3 Share of results 23 66 Dividends received -31 -12 Disposals -6 -12 Impairments -3 -235 Exchange rate differences -45 -144 Other 13 0 Closing balance 1,461 1,475 Share of results from associates and joint ventures of EUR 23 66 table above is mainly attributable to results of TTB of EUR 32 70

Assets and liabilities held for

Assets and liabilities held for sale	6 Months Ended
	Jun. 30, 2021
Assets and liabilities held for sale [Abstract]
Assets and liabilities held for sale	6 Assets and liabilities held for sale includes disposal groups whose through a sale transaction rather than through continuing operations. This relates to businesses for which a sale is agreed upon but for which the transaction has not yet closed or a sheet date but for which no sale has yet been agreed. As at 30 June 2021 the assets and liabilities held Wholesale Banking activities in Austria will be continued part of the business line Retail Germany (Challengers and Growth Markets). At 12 July 2021, ING announced that it has reached an agreement to transfer ING’s Retail Banking operations in Austria to bank99, which is expected to be completed in 2021. The agreement is subject to approval by relevant regulators. ING intends to sell Customer lending portfolios (EUR 1,273 877 lending (EUR 396 5 Customer deposits (EUR 2,243 On 18 February 2021 ING announced the intention to withdraw from the retail banking market in the Czech Republic. and the sale of assets comprising the related government bond portfolio. ING’s retail customers in the Czech Republic have received a welcome offer from Raiffeisenbank Czech Republic. ING’s departure from the Czech retail banking market is proceeding well with EUR 2.1 Raiffeisenbank and the government bond portfolio with a carrying amount of EUR 0.5 second quarter of 2021. The remaining retail assets and liabilities are not presented as liabilities.

Deposits from banks

Deposits from banks	6 Months Ended
	Jun. 30, 2021
Deposits from banks [Abstract]
Deposits from banks	7 Deposits from banks includes non-subordinated debt from banks, except for amounts in the form of debt securities. Deposits from banks by type in EUR million 30 June 2021 31 December 2020 Non-interest bearing 784 792 Interest bearing 88,350 77,306 89,134 78,098 Deposits from banks includes ING’s participation in the Targeted Longer-Term 65.5 59.5 Refinancing Operations (TLTRO III) for EUR 6.0 The TLTRO III funding is granted for a period of three years one year the earliest date of September 2021. The three new participation windows introduced in December 2020, can be repaid quarterly from June 2022. Interest under TLTRO III will be settled on maturity of each TLTRO III operation or on early repayment. The interest rate on TLTRO volumes granted to corporates (excluding financial institutions) and households (excluding mortgages). Under the conditions of the program, interest rates can be as favorable as 50 interest rate on the Deposit Facility rate, but in any case not lower than -1 %. Such a rate would apply to all TLTRO III operations outstanding over the discrete periods between 24 June 2020 and 23 June 2021 (special interest period 1), and between 24 June 2021 and 23 June 2022 (special growth in lending volumes equal to or above 0% between 1 March 2020 and period 1) and 1 October 2020 and 31 December growth targets are not met, the interest rate during the special interest periods can in a worst case scenario be at 50 preceding and following the special interest periods the interest will be in a corridor between the Deposit Facility and Main Refinancing Operations rates, depending on to what extent ING meets the lending growth conditions of the TLTRO III program. Special interest period 2 was announced by the ECB in its press release in December 2020 and confirmed in February 2021. For details on programme refer to Note 1 ‘Basis of preparation and accounting policies’ of the 2020 Annual Report and for the amount of interest income recognised in the reporting period, refer to Note 12 ‘Net interest income’.

Financial liabilities at fair v

Financial liabilities at fair value through profit or loss	6 Months Ended
	Jun. 30, 2021
Financial liabilities at fair value through profit or loss [abstract]
Financial liabilities at fair value through profit or loss	8 Financial liabilities at fair value through profit or loss in EUR million 30 June 2021 31 December 2020 Trading liabilities 26,845 32,709 Non-trading derivatives 1,925 1,629 Designated at fair value through profit or loss 58,370 48,444 87,141 82,781 Reference is made to Note 2 ‘Financial assets at fair value through profit or loss’ for information on repurchase transactions.

Debt securities in issue

Debt securities in issue	6 Months Ended
	Jun. 30, 2021
Debt securities in issue [Abstract]
Debt securities in issue	9 Debt securities in issue relate to debentures and other issued debt securities interest rates based on floating interest rate levels, such as certificates of deposit and accepted bills issued by ING Group, except for subordinated items. Debt securities in issue do not include debt securities Financial liabilities at fair value through profit or loss. ING Group does not have debt securities on terms other than those available in the normal course of business. Changes in debt securities in issue in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 82,065 118,528 Additions 42,208 65,308 Redemptions / Disposals -32,233 -99,212 Exchange rate differences 955 -3,403 Other movements -1,156 844 Closing balance 91,840 82,065 In the first six months of 2021, Debt securities in issue increased 9.8 funding needs as well as favourable market conditions. This is mainly explained by net increases of commercial paper of EUR 9.4 3.1 trades. This increase is partly offset by matured covered bonds of EUR 1.0 EUR 0.6 1.1

Subordinated loans

Subordinated loans	6 Months Ended
	Jun. 30, 2021
Subordinated loans [abstract]
Subordinated loans	10 Subordinated loans by group companies in EUR million 30 June 2021 31 December 2020 ING Groep N.V. 13,795 13,150 ING Group companies 996 2,654 14,791 15,805 Subordinated loans issued by ING Groep N.V. capital for ING Bank N.V. are considered capital. Subordinated loans issued by ING Group companies comprise, for the most part, subordinated loans which are subordinated to all current and future liabilities of ING Bank N.V. Changes in subordinated loans in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 15,805 16,588 New issuances 491 2,165 Repayments -1,455 -2,786 Exchange rate differences and other -49 -163 Closing balance 14,791 15,805 ING Groep N.V. 500 0.875 ING Bank N.V. 1.5 3.625 % Fixed Rate Subordinated Tier 2 notes on the first call date.

Equity

Equity	6 Months Ended
	Jun. 30, 2021
Equity [abstract]
Equity	11 Total equity in EUR million 30 June 2021 31 December 2020 Share capital and share premium 39 39 17,105 17,089 17,144 17,128 Other reserves 1,270 1,181 173 309 873 1,450 -100 -117 215 221 -278 -307 -3,485 -3,636 3,209 3,246 -8 -4 1,870 2,342 Retained earnings 34,882 32,149 Shareholders’ equity (parent) 53,896 51,619 Non-controlling interests 987 1,022 Total equity 54,883 52,640 Cash flow hedge ING mainly hedges floating rate lending with interest rate swaps. Due to an increase in interest rate yield curves in 2021 (decrease in 2020) the interest rate swaps had a negative revaluation of EUR 577 EUR 242 hedge reserve. Currency translation reserve The increase of Currency translation reserve of EUR 151 related to several currencies including USD (EUR 208 -136 63 Retained earnings ING paid in February 2021 a cash-only interim dividend of EUR 468 0.12 equal to 15 % of adjusted net profit for 2020, in line with the ECB recommendation of 15 December which included a definition of adjusted net profit. No dividend recommendation. Refer to Note 21 ‘Capital Management’ for more information about ING’s dividend policy and the ECB recommendations regarding dividend payments.

Net interest income

Net interest income	6 Months Ended
	Jun. 30, 2021
Net interest income [abstract]
Net interest income	12 Net interest income 1 January to 30 June 1 January to 30 June in EUR million 2021 2020 2021 2020 Interest income on loans 6,999 8,333 Interest expense on deposits from banks 71 113 Interest income on financial assets at fair value through OCI 189 283 Interest expense on customer deposits 479 823 Interest income on debt securities at amortised cost 223 263 Interest expense on debt securities in issue 621 1,005 Interest income on non-trading derivatives (hedge accounting) 1,131 1,769 Interest expense on subordinated loans 271 323 Negative interest on liabilities 770 288 Negative interest on assets 276 117 Total interest 9,313 10,935 Interest expense on non-trading derivatives (hedge accounting) 817 1,779 Total interest 2,534 4,160 Interest income on financial assets at fair value through profit 220 450 Interest income on non-trading derivatives (no hedge accounting) 1,140 556 Interest expense on financial liabilities at fair value through profit 158 348 Interest income other 8 21 Interest expense on non-trading derivatives (no hedge accounting) 934 540 Total other interest 1,368 1,026 Interest expense on lease liabilities 7 11 Total interest 10,680 11,962 Interest expense other 26 25 Total other interest 1,125 925 Total interest 3,659 5,085 Net interest income 7,021 6,877 Total 7,021 6,877 liabilities, amounting to EUR 770 288 the first special reference period of the TLTRO III programme. As at 31 December 2020, ING did not have a reasonable expectation of meeting the lending growth targets and did not accrue for the conditional benefit. the first quarter of 2021, ING Group met the lending growth targets for the special reference period (1 March 2020 to 31 March 2021) and therefore the interest rate applicable under TLTRO III during the period of 24 June 2020 to 23 June 2021 changed from -50 bps to -100 bps. Given that the rate is negative, it represents income for ING. The effect of the revised interest rate has been recognised in the statement of profit or loss (interest income) of EUR 309 158 the year 2020. In addition, the unconditional interest of EUR period ended 30 June 2021. For details on the accounting policy to Note 1 ‘Basis of preparation and accounting policies’ Excluding the TLTRO III benefit, net interest income decreased, mainly driven by lower margins on liabilities, while average liability volumes increased as the Covid-19 pandemic reduced customer spending.

Net fee and commission income

Net fee and commission income	6 Months Ended
	Jun. 30, 2021
Net fee and commission income [abstract]
Net fee and commission income	13 Fee and commission income 1 January to 30 June in EUR million 2021 2020 Funds transfer 727 686 Securities business 487 439 Insurance broking 117 101 Asset management fees 146 115 Brokerage and advisory fees 374 321 Other 588 644 2,439 2,307 Other fee and commission income mainly consists of commission 90 million (first six months of 2020: EUR 98 11 (first six months of 2020: EUR 10 37 of 2020: EUR 42 92 million (first six months of 2020: EUR 112 Fee and commission expenses 1 January to 30 June in EUR million 2021 2020 Funds transfer 259 301 Securities business 84 80 Insurance broking 1 0 Asset management fees 5 3 Brokerage and advisory fees 185 157 Other 195 260 729 801 Reference is made to Note 17 ‘Segments’ which includes net fee and commission income, as reported to the Executive Board and the Management Board Banking, disaggregated by line of business segment.

Other income

Other income	6 Months Ended
	Jun. 30, 2021
Other income [abstract]
Other income	14 Other income 1 January to 30 June in EUR million 2021 2020 Share of result associates and joint ventures 20 34 Net result derecognition of financial assets measured -3 187 Other 166 48 184 269 In 2021, Other income other includes the recognition of 72 recovery of the insolvency of a financial institution in the Netherlands, Raiffeisenbank due to the withdraw from the retail banking market in the Czech Republic and the positive recovery of defaulted receivables of EUR 16 18 of financial assets measured at amortised cost included a result of 186 certain securities at amortised cost driven by exceptional market conditions due to Covid-19, which was considered to be infrequent, but more than insignificant in value.

Other operating expenses

Other operating expenses	6 Months Ended
	Jun. 30, 2021
Other operating expenses [Abstract]
Other operating expenses	15 Other operating expenses 1 January to 30 June in EUR million 2021 2020 Regulatory costs 759 663 Audit and non-audit services 16 14 IT related expenses 387 388 Advertising and public relations 149 166 External advisory fees 147 186 Office expenses 141 163 Travel and accommodation 24 43 Contributions and subscriptions 59 56 Postal charges 20 21 Depreciation of property and equipment 285 281 Amortisation of intangible assets 133 121 Impairments and reversals of impairments of tangible and intangible assets 23 333 Addition to / (unused amounts reversed of) provision for reorganisations 88 -2 Addition to / (unused amounts reversed of) other provisions 49 -14 Other 341 284 2,621 2,703 Regulatory costs Regulatory costs represent contributions to the Deposit Guarantee Schemes (DGS), The Single Resolution Fund (SRF), local bank taxes and local resolution funds. Included in Regulatory costs for 2021, are contributions to DGS of EUR 260 203 Belgium, Poland, and Spain and contributions to the SRF and 308 months of 2020: EUR 277 In 2021 local bank taxes increased by EUR 8 183 191 Impairments and reversals of impairments on tangible and intangible assets Impairments on tangible and intangible assets in the first six months of 2021 mainly capitalised software. Impairments on tangible and intangible assets in the first six months of 2020 included 310 impairment in the cash generating units Retail Belgium and Wholesale Banking.

Earnings per ordinary share

Earnings per ordinary share	6 Months Ended
	Jun. 30, 2021
Earnings per ordinary share [abstract]
Earnings per ordinary share	16 Earnings per ordinary share Weighted average number of ordinary Amount during the period Per ordinary share (in EUR million) (in millions) (in EUR) 1 January to 30 June 1 January to 30 June 1 January to 30 June 2021 2020 2021 2020 2021 2020 Basic earnings 3,161 591 3,901.9 3,897.9 0.81 0.15 Basic earnings from continuing operations 3,161 591 0.81 0.15 Effect of dilutive instruments: Stock option and share plans 1.6 0.5 1.6 0.5 Diluted earnings 3,161 591 3,903.5 3,898.5 0.81 0.15 Diluted earnings from continuing operations 3,161 591 0.81 0.15

Segments

Segments	6 Months Ended
	Jun. 30, 2021
Segments [abstract]
Segments	Additional notes to the Condensed consolidated interim financial statements 17 ING Group’s segments are based on the internal reporting structures by lines of business. The Executive Board of ING Group and the Management Board Banking set the performance and monitor the budgets prepared by the business lines. Business financial plans in conformity with the strategy and performance targets set by the Executive Board of ING Group and the Management Board Banking. The following table specifies the segments by line of business and segments: Specification of the main sources of income of each of the segments by line of business Segments by line of business Main source of income Retail Netherlands (Market Leaders) Income from retail and private banking activities in the Netherlands, including the SME and mid-corporate segments, and the Real Estate Dutch domestic mid-corporates. The main products offered accounts, business lending, mortgages and other consumer lending in the Netherlands. Retail Belgium (Market Leaders) Income from retail and private banking activities in Belgium (including Luxembourg), including the SME and mid-corporate segments. The main products offered are similar to those in the Netherlands. Retail Germany (Challengers and Growth Markets) Income from retail and private banking activities in Germany (including Austria). The main products offered are current and savings accounts, customer lending. Retail Other (Challengers and Growth Markets) Income from retail banking activities in the rest of the world, including the SME and mid-corporate segments in specific countries. The main products offered to those in the Netherlands. Wholesale Banking Income from wholesale banking activities. The main products are: lending, debt capital markets, working capital solutions, export finance, daily banking solutions, treasury and risk solutions, and corporate finance. Specification of geographical split of the segments Geographical segments Main countries The Netherlands Belgium Including Luxembourg Germany Including Austria Other Challengers Australia, Czech Republic, France, Italy, Growth Markets Poland, Romania, Turkey, Wholesale Banking Rest of World UK, Americas, Asia and other countries in Central and Eastern Europe Other Corporate Line and the run-off portfolio of Real Estate ING Group monitors and evaluates the performance of ING Group at a consolidated level and by segment using results based on figures according to IFRS as adopted by the European Union (IFRS-EU). The Executive Board and the Management Board Banking consider this measure to be relevant to an understanding of the Group’s financial performance, because it allows investors to understand the primary method used by management to evaluate the Group’s operating performance and make decisions about allocating resources. In addition, ING Group believes that the presentation of results in accordance with IFRS-EU helps investors compare its segment performance on a meaningful basis by highlighting operations and the profitability of the segment businesses. IFRS-EU result is derived by including the IFRS-EU ‘IAS 39 carve out’ adjustment. The IFRS-EU ‘IAS 39 carve-out’ adjustment relates to fair value portfolio hedge accounting strategies for the mortgage and savings portfolios in the Benelux, Germany and Other Challengers that are not eligible IASB. As no hedge accounting is applied to these mortgage and savings portfolios under changes of the derivatives are not offset by fair value changes of the hedge items (mortgages and savings). The segment reporting in the Form 6-K Standards as issued by the EU (IFRS-EU) and reconciled to International Financial Reporting Standards as issued by the International Accounting Standards Board (IFRS-IASB) for consistency with the other financial information contained in this report. The difference between the accounting standards is reflected in the Wholesale Banking segment, and in the geographical split of the segments in the Netherlands, Challengers. Reference is made to Note 1 ‘Basis of preparation and accounting policies’ and IFRS-IASB. Corporate expenses are allocated to business lines based on time spent by head office personnel, the relative number of staff, or on the basis of income, expenses and/or assets of the segment. ING Group reconciles the total segment results to the total result using Corporate Line. The Corporate Line is a reflection of capital management activities and certain income and expenses that are not banking businesses, including the recognition of under expenses). Furthermore, the Corporate Line includes the isolated legacy costs (mainly negative interest results) caused by the replacement of short-term funding with long-term funding Group applies a system of capital charging for its banking operations in order to create a comparable basis for the results of business units globally, irrespective of the business units’ book equity and The information presented in this note is in line with the information presented to the Executive Board of ING Group and Management Board Banking. This note does not provide information on the revenue specified to each product or service internally and is therefore not readily available. Reconciliation between IFRS-IASB and IFRS-EU income, expense and net result 2021 2020 in EUR million 6 month period 1 January to 30 June Income Expenses Taxation Non- controlling interests Net result 1 Income Expenses Taxation Non- controlling interests Net result 1 Net result IFRS-IASB attributable to equity holder of the parent 10,175 5,691 1,265 59 3,161 8,688 7,623 438 36 591 Remove impact of: Adjustment of the EU 'IAS 39 carve out' 2 -956 -260 -697 493 115 379 Result IFRS-EU 3 9,219 5,691 1,005 59 2,464 9,182 7,623 553 36 969 1. Net result, after tax and non-controlling interests. 2. ING prepares the Form 6-K in accordance with IFRS-IASB. This information is prepared by reversing the hedge accounting impacts that applied under the EU 'carve-out' version of IAS 39. For the IFRS-EU result, the impact of the carve-out is re-instated as this is the measure at which management monitors the business. 3. IFRS-EU figures are derived from figures according to IFRS-IASB by excluding the impact of adjustment of the EU 'IAS 39 carve-out'. ING Group Total 2021 2020 in EUR million 6 month period 1 January to 30 June ING Bank N.V. Other Total ING Group ING Bank N.V. Other Total ING Group Income – Net interest income 6,852 0 6,853 6,931 0 6,931 – Net fee and commission income 1,710 -0 1,710 1,507 -1 1,506 – Total investment 653 4 656 760 -16 745 Total income 9,215 4 9,219 9,198 -16 9,182 Expenditure – Operating expenses 5,553 6 5,560 5,625 1 5,626 – Addition to loan loss provisions 131 -0 131 1,997 0 1,998 Total expenses 5,685 6 5,691 7,623 1 7,623 Result before taxation 3,530 -2 3,528 1,575 -17 1,558 Taxation 1,005 0 1,005 519 34 553 Non-controlling interests 59 0 59 36 36 Net result IFRS-EU 2,467 -2 2,464 1,021 -51 969 Adjustment of the EU 'IAS 39 carve out' 697 697 -379 -379 Net result IFRS-IASB attributable to equity holder of the parent 3,163 -2 3,161 642 -51 591 Segments by line of business 2021 2020 in EUR million 6 month period Retail Netherlands Retail Belgium Retail Germany Retail Other Wholesale Banking Corporate Line Total Retail Netherlands Retail Belgium Retail Germany Retail Other Wholesale Banking Corporate Line Total 1 January to 30 June Income – 1,651 894 734 1,354 2,044 174 6,853 1,763 937 801 1,392 1,864 173 6,931 – 368 248 257 253 580 4 1,710 332 207 215 193 561 -2 1,506 – 119 99 45 122 267 5 656 175 71 59 134 354 -48 745 Total income 2,138 1,241 1,036 1,729 2,891 184 9,219 2,269 1,215 1,075 1,720 2,780 123 9,182 Expenditure – 1,181 912 604 1,174 1,452 237 5,560 1,088 969 567 1,120 1,728 154 5,626 – -65 194 19 102 -119 -0 131 139 282 14 304 1,256 3 1,998 Total exp 1,116 1,107 623 1,276 1,333 237 5,691 1,227 1,251 581 1,424 2,984 156 7,623 Result before taxation 1,022 134 413 454 1,558 -53 3,528 1,043 -36 494 295 -204 -34 1,558 Taxation 267 41 135 117 355 89 1,005 262 9 188 85 23 -14 553 Non-controlling interests 0 2 46 10 -0 59 -1 0 2 27 8 -0 36 Net result IFRS-EU 754 94 275 291 1,192 -142 2,464 781 -44 304 183 -235 -19 969 Adjustment of the EU 'IAS 39 carve out' 697 697 -379 -379 Net result IFRS-IASB 754 94 275 291 1,889 -142 3,161 781 -44 304 183 -614 -19 591 Geographical split of the segments 2021 2020 in EUR million 6 month period 1 January to 30 June Netherlands Belgium Germany Other Challengers Growth Markets Wholesale Banking Rest of World Other Total Netherlands Belgium Germany Other Challengers Growth Markets Wholesale Banking Rest of World Other Total Income – 2,023 1,072 1,010 974 749 850 175 6,853 2,097 1,090 1,059 893 799 823 169 6,931 – Net fee and commission income 518 356 263 161 163 246 4 1,710 494 302 228 136 131 217 -3 1,506 – other income 148 127 78 45 154 101 5 656 197 98 80 14 203 197 -44 745 Total income 2,688 1,554 1,350 1,179 1,066 1,197 184 9,219 2,788 1,491 1,367 1,043 1,133 1,237 123 9,182 Expenditure – 1,577 1,065 691 724 636 629 237 5,560 1,736 1,126 652 669 644 644 155 5,626 – provision -51 139 43 55 45 -101 -0 131 320 338 241 212 205 678 3 1,998 Total expenses 1,526 1,205 734 779 681 529 237 5,691 2,056 1,465 893 882 849 1,322 158 7,623 Result before taxation 1,162 349 616 400 384 669 -53 3,528 732 26 474 162 284 -85 -35 1,558 Retail Banking 1,022 134 413 160 294 2,023 1,043 -36 494 74 222 1,796 Wholesale Banking 140 215 203 240 91 669 0 1,558 -310 62 -20 88 62 -85 -2 -204 Corporate Line -53 -53 -34 -34 Result before taxation 1,162 349 616 400 384 669 -53 3,528 732 26 474 162 284 -85 -35 1,558 Taxati 298 92 186 121 83 137 87 1,005 252 25 170 56 71 -10 -10 553 Non-controlling interests 0 2 57 -0 59 -1 0 2 35 -0 36 Net result IFRS-EU 864 257 428 279 245 531 -140 2,464 481 2 302 106 178 -74 -25 969 Adjustment of the EU 'IAS 39 carve out' 477 35 185 -1 697 -338 3 -97 53 -379 Net result IFRS-IASB 1,341 292 613 279 245 531 -140 3,161 143 5 205 159 178 -74 -25 591

Fair value of assets and liabil

Fair value of assets and liabilities	6 Months Ended
	Jun. 30, 2021
Fair value of assets and liabilities [abstract]
Fair value of assets and liabilities	18 Fair value of assets and liabilities Valuation Methods The estimated fair values represent the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It is a market-based measurement, which is based on assumptions that market participants would use and takes into account the characteristics of the asset or liability that market participants would take into account when pricing the asset or liability. Fair values of financial assets and liabilities are based on quoted prices in active market where available. When such quoted prices are not available, the fair value is determined by using valuation techniques. The fair value hierarchy consists of three levels, depending upon whether fair values were determined based on (unadjusted) quoted prices in an active market (Level 1), valuation techniques with observable inputs (Level 2) or valuation techniques that incorporate inputs which are unobservable and which have a more than insignificant impact on the fair value of the instrument (Level 3). A comprehensive description of ING’s valuation methods and framework is reported in Note 38 ‘Fair value of assets and liabilities’ of the 2020 Annual Report on Form report should be read in conjunction with the 2020 Annual Valuation Adjustments Valuation adjustments are an integral part of the fair value. They are included as part of the fair value to provide better estimation of market exit value on measurement date. ING considers various valuation adjustments to arrive at the fair value including Bid-Offer adjustments, Model Risk adjustments, Credit Valuation Adjustments (CVA), Debt valuation Adjustments (DVA), Valuation Adjustment (CollVA) and Funding Valuation Adjustment (FVA). The following table presents the models reserves for financial assets and liabilities: Valuation adjustment on financial assets and liabilities in EUR million 30 June 2021 31 December 2020 Bid/Offer -111 -121 Model Risk -17 -25 CVA -180 -238 DVA -92 -124 CollVA -14 -16 FVA -91 -111 Total Valuation -505 -634 All financial assets and liabilities are recognised initially at fair value. The fair value of a initial recognition is generally its transaction price. fair value of financial instruments whose fair value is based on a valuation technique using unobservable the entire day one difference is deferred. ING defers the Day One profit or loss relating to financial instruments reported with significant unobservable valuation parameters, including positions classified as Level 3 and related to CVA with material unobservable input but not necessarily classified as Level 3. The deferred Day One profit or loss is recognised in the statement of profit or loss over the life of the transaction until the transaction matures or until the observability changes. The impact on the statement of profit and loss of 2021 is deemed to be immaterial. Financial instruments at fair value The fair values of the financial instruments Methods applied in determining fair values of financial assets and liabilities (carried at fair value) Level 1 Level 2 Level 3 Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Financial Assets Financial assets at fair value through profit or loss 13,976 7,897 2 2 144 138 14,123 8,037 3,755 3,378 6,556 4,867 1,250 1,269 11,561 9,514 9 1 22,761 30,623 129 197 22,898 30,821 70,971 53,733 1,849 1,265 72,820 54,998 17,740 11,276 100,290 89,225 3,372 2,870 121,402 103,370 Financial assets at fair value through other comprehensive income 2,266 1,687 168 176 2,434 1,862 28,522 31,592 1,171 1,385 29,693 32,977 889 1,056 889 1,056 30,788 33,279 1,171 1,385 1,057 1,231 33,016 35,895 Financial liabilities Financial liabilities at fair value through profit or loss – 862 1,124 5,047 5,231 168 180 6,077 6,534 – 1 59,319 48,111 4 2 59,323 48,114 – 735 699 69 70 804 768 – 62 55 20,715 27,094 160 217 20,937 27,365 1,658 1,879 85,151 80,505 331 398 87,141 82,781 The following methods and assumptions were used by ING Group to estimate the fair value of the financial instruments: Equity securities Instrument description: investments. Valuation: on quoted market prices. In absence of active markets, fair values are estimated by analysing the investee’s financial position, result, risk profile, prospect, price, earnings reference is made to valuations of peer entities where quoted prices in active markets are available. For equity securities best market practice will be applied using the most relevant valuation method. investments, including investments in private equity funds, are subject to a standard review framework which ensures that valuations reflect the fair values. Fair value hierarchy: regularly available. active markets mainly include corporate investments, fund investments and other equity securities and are classified as Level 3. Debt securities Instrument description: securities (ABS). Valuation: market prices are obtained from an exchange market, dealer, regulatory service. The quoted prices from non-exchange sources are reviewed on their tradability of market prices. If quoted prices in an active market are not available, fair value is based on an analysis of available market inputs, which includes consensus prices obtained from one determined by valuation techniques referenced credit spreads, maturity of the investment, and estimated prepayment rates where applicable. Fair value hierarchy: where quoted prices are readily and regularly available and are hence, classified as positions are classified as Level 2 or Level 3. wide discrepancy in quoted prices exists, are classified as Level 3. Derivatives Instrument description: Derivatives include interest rate derivatives, FX derivatives, Credit derivatives, Equity derivatives and commodity derivatives. Valuation: market and are classified as Level 1 of the fair value hierarchy. For values are estimated based on valuation techniques. OTC derivatives and derivatives trading in an inactive market are valued using valuation techniques. The valuation techniques and inputs depend on derivatives instruments are based on (amongst others) discounted cash flows option pricing models simulations. These valuation models calculate the present value of expected future cash flows, based on arbitrage’ principles. The models are commonly used in the financial are determined from observable market data where possible. Certain inputs may not be observable in the market, but can be determined from observable prices via valuation model calibration procedures. These inputs include prices available from exchanges, dealers, brokers or providers of pricing, yield curves, credit spreads, default rates, recovery rates, dividend rates, volatility of underlying interest rates, currency exchange quotes and consensus data, where available. For uncollateralised OTC derivatives, ING applies Credit Valuation Adjustment to correctly reflect the counterparty credit risk in the valuation. See section DVA/BVA in section b) Valuation Adjustments for more details regarding the calculation. Fair value hierarchy: cannot be implied from observable market data are classified as Level 3. Loans and receivables Instrument description: payments that are not quoted in an active market. Loans and receivables carried at fair value includes trading loans, being securities lending and similar loans expected to be sold and receivables with regards to reverse repurchase transactions. Valuation: other loans is estimated by discounting expected future cash flows using a discount rate that reflects credit risk, liquidity, and other current market conditions. The fair value of mortgage loans is estimated by taking into account prepayment behaviour. Fair value hierarchy: which current market information about similar assets to use as observable, corroborated data for all significant inputs into a valuation model is not available are classified as Level 3 and are expected to be sold as Level 3. Financial liabilities at fair value through profit and loss Instrument description: instruments, primarily comprised of structured notes, which are held at fair value under the Besides that, it includes derivative contracts and repurchase agreements. Valuation: loss are based on quoted market prices, where available. For those securities not actively traded, fair values are estimated based on internal discounted cash flow valuation techniques using interest rates and credit spreads that apply to similar instruments. Fair value hierarchy: cannot be derived from observable market data are classified as Level 3. Transfers No recorded in the reporting period 2021. Level 3: Valuation techniques and inputs used Financial assets and liabilities in Level 3 include both using (i) valuation techniques that incorporate unobservable inputs as well as adjusted to reflect that the market was not actively trading at or around the balance sheet date. Unobservable inputs are inputs which are based on ING’s own assumptions about the factors that market participants would use in pricing an asset or liability, developed based on the best information available in the circumstances. Unobservable inputs may include volatility, correlation, spreads to discount rates, default rates and recovery rates, prepayment rates, and certain credit spreads. Valuation techniques that incorporate unobservable inputs are sensitive to the inputs used. Of the total amount of financial assets classified as Level 3 as at 30 June 4.4 2020: EUR 4.1 1.5 34.6 %) (31 December 2020: EUR 2.1 52.3 %) is based on unadjusted quoted prices in inactive markets. As ING does not generally adjust quoted own inputs, there is no significant sensitivity to ING’s own unobservable inputs. Furthermore, Level 3 financial assets includes approximately EUR 1.6 0.9 which relates to financial assets that are part of structures that are designed to be fully neutral in terms of market risk. Such structures include various financial assets and liabilities for which the overall sensitivity market risk is insignificant. Whereas the fair value of individual components of these structures may be determined using different techniques and the fair value of each of the components of these structures may be sensitive to unobservable inputs, the overall sensitivity is by design not significant. The remaining EUR 1.3 1.1 assets is established using valuation techniques that incorporates certain inputs that are unobservable. Of the total amount of financial liabilities classified as Level 0.3 2020: EUR 0.4 0.2 52.4 %) (31 December 2020: EUR 0.1 34.6 %) is based on unadjusted quoted prices in inactive markets. As ING does not generally adjust quoted prices own inputs, there is no significant sensitivity to ING’s own unobservable inputs. Furthermore, Level 3 financial liabilities includes approximately EUR 0.1 0.1 billion) which relates to financial liabilities that are part of structures that are designed to be fully terms of market risk. As explained above, the fair value of each of the components of these structures may be sensitive to unobservable inputs, but the overall sensitivity is by design not The remaining EUR 0.1 0.2 liabilities is established using valuation techniques that incorporates certain inputs that are unobservable. The table below provides a summary of the valuation techniques, key unobservable inputs upper range of such unobservable inputs, by type of Level 3 asset/liability. The lower and upper range mentioned in the overview represent the lowest and highest variance of the respective valuation input as actually used in the valuation of the different financial instruments. Amounts and percentages stated are unweighted. The range can vary from period to period subject to market movements and change in Level 3 position. Lower and upper bounds reflect the variability of Level 3 positions and their underlying adequately reflect their level of valuation uncertainty. For valuation uncertainty assessment, reference is made to section Sensitivity analysis of unobservable inputs (Level Valuation techniques and range of unobservable Assets Liabilities Valuation techniques Significant unobservable inputs Lower range Upper range in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 At fair value through profit or loss Debt securities 1,250 1,269 Price based Price (%) 0 % 0 % 104 % 107 % Equity securities 144 137 1 Price based Price (EUR) 0 0 5475 5475 Loans and advances 1,363 1,090 4 2 Price based Price (%) 0 % 0 % 101 % 101 % Present value techniques Credit spread (bps) 0 0 250 250 (Reverse) repo's 486 176 Present value techniques Interest rate (%) 3 % 3 % 4 % 4 % Structured notes 168 180 Price based Price (%) 84 % 74 % 118 % 109 % Option pricing model Equity volatility (%) 14 % 14 % 25 % 25 % Equity/Equity correlation n.a. 0.6 n.a. 0.9 Equity/FX correlation -0.3 -0.7 -0.3 0.3 Dividend yield (%) 2 % 0 % 5 % 5 % Derivatives – 4 2 35 38 Option pricing model Interest rate volatility (bps) 15 12 74 70 Present value techniques Reset spread (%) 2 % 2 % 2 % 2 % – 1 Option pricing model FX volatility (bps) n.a. 6 n.a. 10 – 93 168 96 154 Present value techniques Credit spread (bps) 2 2 599 1,403 Price based Price (%) 99 % 99 % 100 % 107 % – 30 24 26 20 Option pricing model Equity volatility (%) 5 % 5 % 83 % 64 % Equity/Equity correlation 0.5 0.5 0.8 0.9 Equity/FX correlation -0.5 -0.6 0.1 0.1 Dividend yield (%) 0 % 0 % 20 % 34 % Price based Price (%) 3 % 3 % 3 % 3 % – 1 3 2 3 Option pricing model Commodity volatility (%) 15 % 18 % 79 % 55 % Com/FX correlation n.a. -0.5 n.a. -0.3 At fair value through other comprehensive income – 889 1,056 Present value techniques Prepayment rate (%) 9 % 9 % 9 % 9 % Price based Price (%) 99 % 99 % 100 % 99 % – 168 176 Present value techniques Credit spread (bps) 1 2 1 2 Interest rate (%) 3 % 3 % 3 % 3 % Price based Price n.a. n.a. n.a. n.a. Other - 63 80 80 Total 4,429 4,101 331 398 Price For securities, where market prices are not available, fair value is measured by comparing the value of these securities with observable pricing data of similar instruments. 0 % are distressed to the point that no recovery is expected, while prices significantly in excess of 100 % or par are expected to pay a yield above current market rates. Credit spreads Credit spread is the premium above a benchmark interest rate, typically LIBOR or relevant treasury instrument, required by the market participant to accept a lower credit quality. Higher credit spreads indicate lower credit quality and a lower value of an asset. Volatility Volatility is a measure for variation of the price of a financial instrument or other valuation input over time. Volatility is one of the key inputs in option pricing models. Typically, the higher the volatility, of the option. Volatility varies by the underlying reference (equity, commodity, rates), by strike, and maturity of the option. The minimum level of volatility is 0 % and there is no theoretical maximum. Correlation Correlation is a measure of dependence between two underlying derivatives and other instruments having more than one underlying reference. High positive correlation (close to 1) indicates strong positive (statistical) relationship, where underliers move, everything else equal, into the same direction. The opposite holds for a high negative correlation. Reset spread Reset spreads are key inputs to mortgage linked prepayment swaps valuation. Reset spread is the future spread at which mortgages will re-price at interest rate reset dates. Inflation rate Inflation rate is a key input to inflation linked instruments. Inflation linked instruments protect against price inflation and are denominated and indexed to investment units. Interest payments would be based on the inflation index and nominal rate in order to receive/pay the real rate of return. A rise in nominal coupon payments is a result of an increase in inflation expectations, real rates, or both. As markets for these inflation linked derivatives are illiquid, the valuation parameters become unobservable. Dividend yield Dividend yield is an important input for equity option pricing expected to pay out each year relative to its share price. Dividend yields are generally expressed as an annualised percentage of share price. Jump rate Jump rates simulate abrupt changes in valuation models. The rate is an added component to the discount rate in the model to include default risks. Prepayment rate Prepayment rate is a key input to mortgage and loan valuation. Prepayment rate is the estimated rate mortgage borrowers will repay their mortgages early, e.g. 5 % per year. Prepayment inputs to mortgage linked prepayment swaps valuation Level 3: Changes during the period Changes in Level 3 Financial assets Trading assets Non-trading derivatives Financial assets mandatorily at FVPL Financial assets designated at FVPL Financial assets at FVOCI Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance 882 174 1 8 1,191 1,381 796 1,244 1,231 1,961 4,101 4,768 Realised gain/loss 5 -61 0 -1 12 -104 -0 -198 -8 -19 10 -383 Revaluation recognised in other comprehensive income during the period -8 -46 -8 -46 Purchase of assets 14 453 3 3 834 1,180 489 212 54 39 1,393 1,887 Sale of assets -32 -73 -3 -8 -265 -973 -25 -270 -147 -419 -472 -1,743 Maturity/settlement -8 -39 -1 -21 -83 -12 -57 -53 -175 -94 -354 Reclassifications -16 330 -13 -105 -29 224 Transfers 14 517 6 1 -3 -1 11 523 Transfers -496 -90 0 -528 -138 -496 -755 Exchange rate differences 0 0 7 -24 3 -4 10 -27 Changes in the composition of the group and other changes 1 5 0 1 1 6 Closing balance 379 882 2 1 1,743 1,191 1,248 796 1,057 1,231 4,429 4,101 1 includes EUR 35 312 2 through other comprehensive income’. Financial assets transfers into and transfers out of fair value hierarchy levels are end of the reporting period. In the first six months of 2021, financial assets transfers out of Level 3 is mainly related to debt securities due to the valuation no longer being significantly impacted by unobservable inputs instruments. Changes in Level 3 Financial liabilities Trading liabilities Non-trading derivatives Financial liabilities designated as at fair value through profit or loss Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance 180 195 39 110 180 184 398 490 Realised gain/loss recognised in the statement of profit or loss during the period 1 57 -2 -2 20 22 -22 77 -4 Additions 16 55 3 19 62 662 81 736 Redemptions -2 -116 -3 -45 -159 -90 -164 -250 Maturity/settlement -39 -11 -0 -52 -0 -83 -40 -146 Transfers 14 170 8 228 267 242 445 Transfers -96 -111 -3 -23 -165 -738 -264 -873 Closing balance 130 180 33 39 168 180 331 398 1 EUR 77 -4 Financial liabilities transfers into and transfers out of fair value hierarchy the end of the reporting period. In the first six months of 2021, financial liabilities transfers into and out of level 3 mainly consisted of structured notes, measured as designated at fair value through profit or loss. The structured notes were transferred out of Level 3 due to the valuation being significantly respectively no longer significantly impacted by unobservable inputs Recognition of unrealised gains and losses in Level 3 Amounts recognised in the statement of profit or loss relating to unrealised gains and losses during the year that relates to Level 3 assets and liabilities are included in the line item ‘Valuation results and net trading income’ in the statement of profit or loss. In 2020 and the first half of 2021, unrealised gains and losses that relate to ‘Financial assets other comprehensive income’ are included in the Revaluation reserve – Equity securities at fair value through other comprehensive income or Debt Level 3: Sensitivity analysis of unobservable inputs Where the fair value of a financial instrument is determined using inputs which a more than insignificant impact on the fair value of the instrument, the actual value balance date may be drawn from a range of reasonably possible alternatives. In line with market practice the upper and lower bounds of the range of alternative input values reflect a 90 % level of valuation certainty. The actual levels chosen for the unobservable inputs in preparing the financial valuation methodology used for fair valued financial instruments. In practice valuation uncertainty is measured and managed per exposure to individual valuation inputs (i.e. risk factors) at portfolio level across different product categories. Where the disclosure looks at individual Level 3 inputs the actual valuation adjustments may also reflect the benefits of portfolio offsets. This disclosure does not attempt to indicate or predict future fair value movement. The numbers in isolation give limited information as in most cases these Level 3 assets and liabilities should be instruments (for example as a hedge) that are classified as Level 2. The valuation uncertainty in the table below is broken down by related risk class rather than by product. The possible impact of a change of unobservable inputs in unobservable inputs are significant to the valuation is as follows: Sensitivity analysis of Level 3 instruments Positive fair value movements from using reasonable possible alternatives Negative fair value movements from using reasonable possible alternatives in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Equity (equity derivatives, structured notes) 3 33 -21 -14 Interest rates (Rates derivatives, 15 20 -1 -1 Credit (Debt securities, Loans, structured notes, credit derivatives) 68 43 -27 -27 86 96 -49 –42 i) Financial instruments not measured at fair value The following table presents the estimated fair values of the financial instruments not measured at fair value in the statement of financial position. The aggregation of the fair values presented below does not represent, and should not be construed as representing, the underlying value of ING Methods applied in determining fair values of financial assets and liabilities (carried at amortised cost) Carrying Amount Carrying amount approximates fair value Level 1 Level 2 Level 3 Total fair in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Financial Assets Loans and advances to banks 26,198 25,364 2,548 2,165 0 0 7,714 7,763 15,990 15,611 26,252 25,539 Loans and advances to customers 607,777 593,970 19,007 17,486 0 0 17,828 14,595 583,268 576,659 620,103 608,740 Securities at amortised cost 49,467 50,587 0 0 47,444 49,109 2,433 2,550 586 622 50,462 52,281 683,442 669,921 21,555 19,651 47,444 49,109 27,975 24,908 599,844 592,892 696,817 686,560 Financial liabilities Deposits from banks 89,134 78,098 6,306 3,918 0 77,571 68,473 5,870 6,014 89,748 78,405 Customer deposits 620,564 609,517 590,870 580,262 0 17,081 14,007 12,730 15,704 620,682 609,972 Debt securities in issue 91,840 82,065 -0 51,051 51,906 22,879 24,005 18,283 6,449 92,213 82,360 Subordinated loans 14,791 15,805 -0 -0 14,263 15,013 1,167 1,161 15,429 16,174 816,329 785,484 597,176 584,180 65,314 66,919 118,698 107,645 36,883 28,167 818,072 786,911

Legal proceedings

Legal proceedings	6 Months Ended
	Jun. 30, 2021
Legal proceedings [Abstract]
Legal proceedings	19 ING Group and its consolidated subsidiaries are involved in governmental, regulatory, arbitration and legal proceedings and investigations in the Netherlands and in a number of foreign jurisdictions, involving claims by and against them which arise in the ordinary course of their businesses, connection with their activities as lenders, broker-dealers, underwriters, issuers of securities and investors and their position as employers and taxpayers. In certain of such proceedings, very large or indeterminate amounts are sought, including punitive and other damages. This note should 2020 consolidated financial statements of ING Group, which included further details on While it is not feasible to predict or determine the ultimate outcome of all pending or regulatory, arbitration and legal proceedings and investigations, ING is of the opinion that some of the proceedings and investigations set out below may have or have in the recent past had a significant effect on the financial position, profitability or reputation of ING and/or ING and its consolidated subsidiaries. Settlement agreement: with the Dutch Public Prosecution Service relating to previously disclosed requirements for client on-boarding and the prevention of money laundering and corrupt practices. Following the entry into the settlement agreement, ING has experienced heightened scrutiny from authorities in countries. ING is also aware, including as a result of media reports, that other parties seek to commence legal proceedings against ING in connection with the subject matter of filed or may file requests for disciplinary proceedings against ING employees based on the Certain parties filed requests with the Court of Appeal in to enter into the settlement agreement with ING and not to prosecute ING or (former) ING employees. In December 2020, the Court of Appeal issued the settlement agreement with ING was upheld, making the settlement final. However, in a separate ruling, the Court ordered the prosecution of ING’s former CEO. Findings regarding AML processes: authorities concerning anti-money laundering matters, and in the context of significantly increased attention on the prevention of financial economic crime, ING has experienced heightened scrutiny by authorities countries. The interactions with such regulatory and judicial authorities have included, continue to include, onsite visits, information requests, investigations and other enquiries. Such interactions, as well as ING’s internal assessments in connection with its global enhancement programme, have in some cases resulted in satisfactory outcomes, and also have resulted in, and may continue to result in, findings, or other conclusions which may require appropriate remedial actions by ING, or may have other consequences. ING intends to continue to work in close cooperation with authorities as it seeks to improve its management of non- financial risks in terms of policies, tooling, monitoring, ING continues to take steps to enhance its management of compliance risks and embed stronger awareness across the whole organisation. These steps are part of the global KYC programme and set of initiatives, which includes enhancing KYC files and working on various structural improvements in compliance policies, monitoring, governance, knowledge and behaviour. SIBOR – SOR litigation: filed a U.S. class action complaint in the New York District Court alleging that several banks, including ING, conspired to rig the prices of derivatives tied to SIBOR and the Singapore Swap Offer Rate (“SOR”). The lawsuit refers to investigations by the Monetary Authority of Singapore (“MAS”) and other regulators, including the U.S. Commodity Futures Trading Commission (“CFTC”), in relation to rigging prices of SIBOR- derivatives. In October 2018, the New York District Court issued a decision dismissing all claims against ING Group and ING Capital Markets LLC, but leaving ING Bank, together with several other banks, in the case, and directing plaintiffs to file an amended complaint consistent with the Court's rulings. In filed such amended complaint, which asserts claims (or any other ING entity), effectively dismissing ING Bank from the case. In December permission from the Court to file a further amended complaint the New York District Court granted the defendants’ motion to dismiss and denied leave to further amend the complaint, effectively dismissing all remaining claims against ING Bank. In March 2021, the Second Circuit court vacated the District Court’s ruling. The case was remanded to the District Court to reconsider the amended complaint that would add ING Bank N.V. defendants’ petition for rehearing with the Second Circuit court. Interest rate derivatives claims: interest rate derivatives that were sold to clients in connection with floating interest rate loans in order to hedge the interest rate risk of the loans. These proceedings are based on several legal grounds, depending on the facts and circumstances of each specific case, inter alia alleged breach of duty of care, insufficient information provided to the clients on the product and its risks and other elements related to the interest rate derivatives that were sold to clients. In some cases, the court has ruled in favour of the claimants and annulled the interest rate derivative or ordered repayment of certain amounts to the claimants. The total amounts that need to be repaid or compensated in some cases still need to be determined. appeal against adverse rulings. Although the outcome of the pending litigation and similar brought in the future is uncertain, it is possible that the courts may ultimately rule in some or all of such cases. Where appropriate a provision has been taken. The aggregate financial impact of current and future litigation could become material. Mortgage expenses claims: regarding reimbursement of expenses associated with the formalisation of mortgages. In most court proceedings in first instance the expense clause of the relevant mortgage contract has been declared null and ING Spain has been ordered to reimburse all or part of the applicable expenses. Since 2018, European Court of Justice have issued rulings setting out which party should and stamp duty costs. In January 2021, the Spanish Supreme Court signed prior to 16 June 2019, the date the new mortgage law entered into force, should be borne by the bank. Media attention for the statute of limitations applicable to the right to claim reimbursement of costs resulted in an increased number of claims at the beginning of release informing of its decision to ask ECJ for a preliminary ruling regarding the criteria that should be applied determine the date from which the action for claiming the reimbursement of mortgage expenses is considered to be expired. ING Spain has also been included, together with other customer associations. In one of the class actions an agreement class action ING filed an appeal asking the Spanish first instance is only applicable to the consumers that were part of the case. A provision has been established in the past and has been adjusted where appropriate. Claims regarding mortgage loans in Swiss franc in Poland: retail customers who took out mortgage loans indexed to the Swiss franc. Such customers have alleged that the mortgage loan contract contains abusive clauses. One element that the court is expected to consider in determining whether such contracts contain abusive clauses is whether the rules to determine used for the conversion of the loan from Polish zloty to Swiss franc are unambiguous and verifiable. In December 2020, the Polish Financial Supervision Authority court settlements on foreign-currency mortgage disputes, with mortgages indexed to Swiss franc serving as a reference point. In February 2021, ING Poland announced its support for this initiative. ING has recorded a portfolio provision with respect to the claims and the PFSA proposal. The Polish Supreme Court is expected to provide further clarity on this topic in a ruling scheduled

Related parties

Related parties	6 Months Ended
	Jun. 30, 2021
Related parties [abstract]
Related parties	20 In the normal course of business, ING Group enters into various transactions with related parties. Parties are considered to be related if one party has the ability to control or exercise significant influence over the other party in making financial or operating decisions. Related parties of ING subsidiaries, associates, joint ventures, key management personnel, and various defined benefit and contribution plans. Transactions between related parties include rendering or receiving of services, leases, transfers under finance arrangements and provisions of guarantees or collateral. Related party transactions in the six month period ended 30 June in the 2020 consolidated financial statements of ING Group. No related party transactions that have taken place in the six month period ended 30 June 2021 have materially affected the financial position ING during this period.

Capital management

Capital management	6 Months Ended
	Jun. 30, 2021
Capital management [Abstract]
Capital management	21 ING Group’s Common Equity Tier 1 capital (CET1) ratio increased to 15.7 % as at 30 June 2021 (31 December 2020: 15.5 %), mainly due to capital generation. ING’s CET1 ambition level is around 12.5 %. This ambition level is comfortably above the current Maximum Distributable Amount (MDA) level of 10.51 %, implying a management buffer of ~ 200 Dividend ING has reserved EUR 1,232 outside of CET1 capital, reflecting our distribution policy of a 50 % pay-out ratio on resilient net profit. Resilient net profit (which is defined as net profit on IFRS-EU basis, adjusted for significant items not linked to the normal course of business) is equal to IFRS-EU net profit. At 30 June 2021, ING reserved EUR 4,031 amount originally reserved for the final 2019 dividend, the remaining dividend, as well as the amount reserved for interim dividend from the first half year of 2021 net On 23 July 2021, the ECB confirmed its recommendation to limit or refrain from dividends in pandemic, and return to a bank-by-bank assessment of capital and distribution plans September 2021. ING will pay an amount of EUR 0.48 (EUR 0.21 one third remaining amount originally reserved for the 2020 distribution (EUR 0.27 ING intends to make an additional distribution after 30 September 2021 of the amount will be in the form of cash and/or a share buyback, Ratings The ratings from S&P, on ING Groep N.V. Main credit ratings of ING at 30 June 2021 Standard & Poor’s Moody’s Fitch Rating Outlook Rating Outlook Rating Outlook ING Groep N.V. Long-term A- Stable Baa1 Stable A+ Negative ING Bank N.V. Long-term A+ Stable Aa3 Stable AA- Negative Short-term A-1 P-1 F1+ ING’s key credit ratings and outlook are shown in the table above. Each of these ratings reflects only the view of the applicable rating agency at the time the rating was issued, and any explanation of the significance of may be obtained only from the rating agency. A security rating is not a recommendation to buy, sell or hold securities and each rating should be evaluated independently of other ratings. There is no assurance that any credit rating will remain in effect for any given period of time or that a rating will not be lowered, suspended or the rating agency’s judgment, circumstances so warrant. ING accepts no responsibility for the accuracy or reliability of the ratings.

Subsequent events

Subsequent events	6 Months Ended
	Jun. 30, 2021
Subsequent events [abstract]
Subsequent events	22 There are no subsequent events to report other than those disclosed in Note 6 ‘Assets and liabilities held for sale’ and Note 21 ‘Capital management’.

Risk management

Risk management	6 Months Ended
	Jun. 30, 2021
Risk management [abstract]
Risk management	Credit risk management practices (*) Globally, in the first half of 2021 the roll-out of the vaccine programmes has gained momentum. However, in the last months an increasing number of Covid-19 infections, mainly due to the spread of observed. In many countries, governments have continued their economic support programs (such as tax advantages, unemployment regulations or guarantees) that we believe will assist ING clients in potential financial difficulty to manage through these extraordinary times. Governments in almost all Retail Banking countries have adopted measures providing for payment holidays. As of end of June 2021, approximately 159,000 for which a payment holiday is granted amounts to € 17.5 56 % were for customers located in the Netherlands and Belgium. At the end of June 2021, 96 % of granted payment holidays had expired. In 2020, various measures were introduced by governments and ING to alleviate the impact of Covid-19, including European Banking Authority (EBA) guidelines. payment holidays did not lead to forbearance classifications. Therefore, it did not automatically trigger recognition of lifetime Expected Credit Loss (ECL) either. Until 30 September 2020, ING followed these guidelines and when a payment holiday was provided to a customer as part of a “general payment moratorium”, ING did not classify the exposure as forborne. The EBA further extended these guidelines from 1 October 2020 until 31 March conditions. ING decided not to make use of the extension of these guidelines treat all payment holiday requests under new or extended schemes (after September 2020) as stage 2 or stage 3 exposures. Portfolio quality and concentration Lending to businesses is diversified over various sectors and countries. The total gross carrying amounts is composed of approximately 65 % business lending and 35 % consumer lending. For a detailed breakdown of ING’s credit risk portfolio by Sector and Geographical area, refer to the section “Credit Risk portfolio” reported in the ‘Risk management’ section of the ING’s total gross carrying amounts increased compared to year-end 2020 partly as a result of the TLTRO III participation through deposits to central banks. This is visible in the next table as investment grade with AAA rating. Covid-19 sensitive sectors (*) The following sectors are most impacted (directly or indirectly) by the Covid-19 pandemic and lockdown measures and restrictions. Aviation (Transportation & Logistics): 4.3 0.47 % of total portfolio) from € 4.6 0.52 % of total portfolio) in 2020. In terms of rating, the distribution of outstanding improved compared to 2020, with outstanding remaining stable in Investment grade, whereas the Speculative grade outstanding decreased. Both, the Substandard grade and Non-performing grade improved to 0.0 Hospitality & Leisure (Services and Food, Beverages & Personal Care): 5.4 billion outstanding ( 0.59 % of total portfolio) from € 5.9 0.67 % of total portfolio). Rating distribution worsened compared to 2020, with outstanding reduction in BBB and BB ratings, whereas an increase is noticeable in CCC rating classes. Substandard grade slightly increased to 9.9 % from 9.7 % in 2020, and the NPL grade deteriorated to 7.2 % from 6.2 % in 2020. Non-food retail (Retail): 11.0 1.21 % of total portfolio) from € 10.8 1.22 % of total portfolio) in 2020. Rating distribution improved with concentrations increasing in Investment grade and reducing in Speculative grade. The NPL grade improved to 3.0 % from 3.3 % in 2020, while Substandard grade increased to 1.2 % from 0.7 %. Real estate: 53.1 5.81 % of total portfolio) from € 54.4 6.13 % of total portfolio) in 2020. Rating distribution improved with concentrations increasing in Investment grade and slightly reducing in Speculative grade. The NPL grade increased to 1.5 % from 1.2 % in 2020, while Substandard grade improved to 0.8 % from 1.2 %. Loan Loss Provisioning (*) Since 1 January 2018, ING has recognised loss allowances which is designed to be forward-looking. The IFRS 9 impairment requirements are applicable to on-balance financial assets measured at amortised cost or fair value through other comprehensive income loans, debt securities and lease receivables, as well as off-balance sheet items such as commitments, certain financial guarantees, and undrawn committed revolving credit facilities. The table below describes the portfolio composition over the different IFRS 9 stages and rating classes. The Stage 1 portfolio represents 92.7 % (31 December 2020: 91.8 %) of the total gross carrying amounts, mainly composed of investment grade, while Stage 2 makes up 6.0 % (31 December 2020: 6.8 %) and Stage 3 makes up 1.4 % (31 December 2020: 1.5 %) of the total gross carrying amounts, respectively. Gross carrying amount per IFRS 9 stage in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total 30 June 2021 Rating class Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Investment grade 1 (AAA) 118,799 3 47 0 118,846 3 2-4 (AA) 109,118 4 301 0 109,419 4 5-7 (A) 151,056 17 935 1 151,992 17 8-10 (BBB) 307,902 69 9,591 15 317,493 84 Non-Investment grade 11-13 (BB) 160,025 211 15,436 106 175,461 317 14-16 (B) 28,468 192 19,930 475 48,397 667 17 (CCC) 4,277 9 5,334 291 9,611 301 Substandard grade 18 (CC) 2,888 189 2,888 189 19 (C) 2,293 229 2,293 229 NPL grade 20-22 (D) 12,827 3,616 12,827 3,616 Total 879,645 505 56,755 1,306 12,827 3,616 949,228 5,427 ¹IAS 37 provisions are established for non-credit replacement guarantees not in the scope of IFRS 9. Total 85 Gross carrying amount per IFRS 9 stage in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total 31 December 2020 Rating class Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Investment grade 1 (AAA) 109,734 3 46 0 109,780 3 2-4 (AA) 108,776 6 646 0 109,422 6 5-7 (A) 137,901 27 797 1 138,698 28 8-10 (BBB) 294,923 88 7,418 12 302,341 100 Non-Investment grade 11-13 (BB) 159,076 239 18,513 133 177,588 372 14-16 (B) 28,335 208 23,742 570 52,077 777 17 (CCC) 2,817 9 5,113 259 7,930 269 Substandard grade 18 (CC) 3,384 248 3,384 248 19 (C) 2,323 254 2,323 254 NPL grade 20-22 (D) 13,398 3,797 13,398 3,797 Total 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 ¹IAS 37 provisions are established for non-credit replacement guarantees not in the scope of IFRS 9. Total 75 Changes in gross carrying amounts and loan loss provisions (*) The table below provides a reconciliation by stage of the gross carrying/nominal amount loans and advances to banks and customers, including loan commitments and financial of financial instruments represents the impact of stage transfers upon the gross carrying/nominal amount and associated allowance for ECL. This includes the net remeasurement of ECL arising from stage transfers, for example, moving from a 12-month (stage 1) to a lifetime (stage 2) ECL measurement basis. The net remeasurement line represents the changes in provisions for facilities that remain in the same stage. Please note the following comments with respect to the movements observed in the table below half-year 2021: ● Stage 2 gross carrying amount decreased by € 5.2 62 mainly caused by the significant lifetime PD trigger (€ -5.4 -3.3 billion), partly offset by an increase in other triggers of which Forbearance is the 2.0 billion). ● Transportation & Logistics, Real Estate, Services and Food, Beverages & Personal Care are still the sectors with the highest Stage 2 gross carrying amounts, which represent 11 %, 10 %, 9 % and 8 %, respectively of the total, however apart from Transportation & Logistics that stayed Stage 2 amounts of € 0.8 1.3 0.8 ● Stage 3 gross carrying amount decreased by € 0.6 13.4 related to repayments and write-offs for certain large individual files. Consequently, in the first 6 months of 2021 relatively low stage 3 individual risk costs were recognized. ● The net remeasurement of loan loss provisions in Stage 1 and Stage 2 of € -114 -62 respectively were significantly impacted by the improved macroeconomic outlook resulting in lower management adjustments to address for the delay in observed defaults . Additional information on macroeconomic scenarios is included in sensitivity analysis of key sources of estimation uncertainty”. Changes in gross carrying amounts and 1,2,3 in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Opening balance at 1 January 2021 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 Transfer into 13,305 16 -12,830 -202 -475 -19 -204 Transfer into -15,575 -23 16,345 185 -771 -79 83 Transfer into -1,228 -3 -1,208 -64 2,436 426 359 Net remeasurement of loan loss provisions -114 -62 89 -87 New financial assets originated or purchased 77,861 80 77,861 80 Financial assets that have been derecognised -33,762 -31 -5,765 -46 -1,539 -87 -41,066 -163 Net drawdowns and repayments -2,518 -1,768 -222 -4,509 Changes in models/risk parameters 4 16 33 53 Decrease/Increase in loan loss provisions -70 -171 362 121 Write-offs -472 -472 Recoveries of amounts previously written off 21 21 Foreign exchange and other movements -6 1 -92 -97 Closing balance at 30 June 2021 879,645 505 56,755 1,306 12,827 3,616 949,228 5,427 1 At the end of June 2021, the gross carrying amounts included loans and advances to central banks (€ 119.6 26.2 30.6 49.5 613.1 billion), assets held for sale (€ 1.3 126.9 -6.5 -6.1 adjustment hedged items (€ -0.8 -2.2 -2.5 0.1 2 Stage 3 Lifetime credit impaired includes € 3 3 At the end of June 2021, the stock of provisions included provisions for loans and advances to central banks (€ 4 20 12 securities at amortised cost (€ 22 5,347 23 Changes in gross carrying amounts and 1,2,3 in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Opening balance at 1 January 2020 817,247 490 41,082 881 10,955 3,275 869,284 4,646 Transfer into 9,139 24 -8,899 -200 -240 -18 0 -194 Transfer into -39,093 -76 39,601 651 -509 -57 0 518 Transfer into -3,592 -30 -1,879 -163 5,471 1,518 0 1,325 Net remeasurement of loan loss provisions 0 109 0 450 0 700 0 1,259 New financial assets originated or purchased 161,333 178 0 0 161,333 178 Financial assets that have been derecognised -116,035 -85 -6,987 -107 -897 -236 -123,919 -428 Net drawdowns and repayments 12,563 -938 -181 11,444 Changes in models/risk parameters 7 7 Increase in loan loss provisions 119 638 1,908 2,666 Write-offs -1,200 -1,200 -1,200 -1,200 Recoveries of amounts previously written off 39 39 Foreign exchange and other movements -28 -42 -226 -297 Closing balance at 31 December 2020 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 1 At the end of December 2020, the gross carrying amounts included loans and advances to central banks (€ 109.2 25.4 34.0 50.6 (€ 599.7 118.4 -6.4 -8.3 -1.0 billion), a receivable that is offset by a liquidity facility (€ -2.2 -2.2 -0.3 2 Stage 3 Lifetime credit impaired includes € 3 3 At the end of December 2020, the stock of provisions included provisions for loans and advances to central banks (€ 3 23 14 17 customers (€ 5,779 17 Macroeconomic scenarios and sensitivity analysis of key sources of estimation uncertainty Methodology (*) Our methodology in relation to the adoption and generation of macroeconomic scenarios section. We continue to follow this methodology in generating our probability-weighted ECL, with consideration of alternative scenarios and management adjustments supplementing this the consensus forecast does not fully capture the extent of recent credit or economic events. The macroeconomic scenarios are applicable to the whole ING portfolio in the scope Under IFRS 9, ING’s reportable ECL numbers are most sensitive to the forward-looking macroeconomic forecasts used as model inputs, the probability-weights applied to each identifying a significant increase in credit risk. As such, these crucial management judgement, and are subject to extensive governance. Management adjustments can be applied where the impact of the updated macroeconomic under-estimated by the IFRS 9 models. As a result of the economic effects related to Covid-19, estimation uncertainty and level of management judgement increased resulting in the need for additional adjustments. Baseline scenario (*) As a baseline for IFRS 9, ING has adopted a market neutral view combining consensus forecasts for economic variables (GDP, Oxford Economics’ Global Economic Model (OEGEM) is used to complement the consensus with consistent projections for variables for which there are no consensus estimates available (most notably house prices and – for some countries - unemployment), to generate alternative scenarios, to convert annual consensus information to a quarterly frequency and to ensure general consistency of the scenarios. As the baseline with the consensus view it can be considered as free from any bias. The relevance and selection of macroeconomic variables is defined by the ECL models governance. The scenarios are reviewed and challenged by two panels. The first panel consists of economic experts from Global Markets Research and Risk and Modelling specialists, while the second relevant senior managers. Alternative scenarios and probability weights (*) Two alternative scenarios are taken into account; an upside and a downside scenario. The alternative scenarios have to a large extent a technical character as these are based on the forecast errors of the OEGEM. To understand forecast errors of the past 20 years. The distribution of forecast errors for GDP, share prices is applied to the baseline forecast creating a broad range of alternative outcomes. In addition, to understand the balance of risks facing the economy in an unbiased way, Oxford Economics runs a survey with respondents from around the world and across a broad range of industries. In this survey the respondents put forward their views of key risks. Following the survey results, the distribution of forecast errors (that is being used for determining the scenarios) may be skewed. For the downside scenario, ING has chosen for the 90th percentile of that distribution because with how within risk management earnings at risk is defined represented by the 10th percentile of the distribution. The applicable percentiles of the distribution probability for each alternative scenario. Consequently, the baseline scenario has a 60% probability weighting. Please note that, given their technical nature, the downside and upside scenarios specific narrative. Macroeconomic scenarios applied (*) The provisions are based on the June 2021 consensus forecasts. Baseline assumptions (*) The June 2021 consensus anticipates global output (based relevant economies), after declining sharply in 2020 by 3.2 %, to bounce back to 6.0 % expected growth in 2021 and 4.3 % in 2022. For the years thereafter a levelling off to a below 3 % growth rate is being expected. The consensus reflects that vaccination has picked up strongly in most developed economies allowing most governments to (further) re-open their economies. For Europe in particular the corner in Q2 2021 as the speed of vaccination has picked up decisively and social or lessened, thus broadening the global economic recovery. The recovery of economies in Asia-Pacific, in which countries like China, Japan and Australia were already back at pre-crisis levels in 2020, is expected to continue. In the US, a stimulus-fuelled economic boom, that already brought back the is expected to continue with growth rates of 6.6 % in 2021 and 4.3 % in 2022. The eurozone may reach pre-crisis levels only by Q2 2022. For most countries unemployment is expected to peak in 2020/21 and to gradually decline in thereafter. remain low (albeit increasing), house prices can be assumed When compared to the December 2020 consensus forecast, used for the 2020 Annual forecast assumes a stronger economic recovery. Global GDP is expected to increase by 6.0 % in 2021 (compared to 5.0 % assumed before) and 4.3 % in 2022 ( 3.8 % assumed before). This upward adjustment follows on from a more effective than expected roll-out of vaccination programs and generally better than expected realizations. Alternative scenarios and risks (*) Although vaccination against Covid-19 progresses swiftly in many countries, uncertainty surrounding the forecasts remain larger than usual, reflecting continued uncertainty around the development and impact of the pandemic. In 2020, the dispersion of the alternative scenarios has of uncertainty. Specifically, the forecast bandwidths projected for the end of the forecast horizon has been applied to the near term as well. As the forecast-error distributions widen over time, this means that the distributions became in the near-term and thus allowed for a wider range of possible outcomes. Meanwhile, horizon they remained unchanged and hence comparable to scenarios generated prior to the pandemic. However, experience from 2020 shows that the economic harm from lockdowns has diminished over time. Economies have become better at operating with lockdown restrictions in place (measures became more tailored and businesses more prepared). Oxford Economics’ research shows that the harm from lockdowns has halved from what it was in the first half of 2020. Following on from this, in the current scenarios the overlay to the near-term dispersion has been halved while the downward skew following on from the outcomes of Oxford Economics’ Global Risk Survey has been maintained. As a result from this adjustment, the dispersion of the forward-looking distributions (from which the alternative scenarios are being derived) larger than in normal times, but it now also reflects the adaptability of The upside scenario – though technical in nature – for most countries implies a quick coronavirus baseline forecast and more positive medium-term prospects than envisaged in the baseline scenario. In this scenario unemployment rates quickly fall back from their peaks. The downside scenario, while being equally technical in term. The downside scenario reflects the risk of the coronavirus pandemic not only risks to the near-term outlook but also of leaving longer-lasting scars on the supply private sector de-leveraging, austerity measures from governments to reduce overall debt, weaker productivity growth). Management adjustments applied (*) In times of volatility and uncertainty where portfolio quality and the economic models alone may not be able to accurately predict losses. In these cases management adjustments applied to appropriately reflect ECL. Management adjustments can also be applied where the impact of updated macroeconomic scenarios is over- An overlay of € 296 394 defaults occurring in this crisis, as a result of support programmes, while GDP growth as more favourable 2021 GDP growth forecasts (and subsequent years) are now being taken into account in the models. As it is expected that additional defaults as a result of the crisis 296 was calculated using a scenario with a time lag between GDP growth forecasts deteriorating and defaults occurring. Looking forward, it is expected that the phasing out of the Covid-19 related government support as Payment Holidays, tax deferrals or subsidies, in the course of 2021 could lead to more business insolvencies and unemployment. This could lead to more clients that have currently taken payment holidays or benefited from other support measures getting into financial difficulties and to higher levels of defaults. To the extent the IFRS 9 models, a management adjustment has been recognised. This management recognised for SME and mid-corporate portfolios as these portfolios are considered to be most at risk as having the highest percentage of customers that requested for payment holidays or include the sectors most dependent on the government support measures compared to other portfolios. As at 30 June 2021 ING has management adjustment of € 99 85 146 Belgium (31 December 2020: € 131 by macroeconomic forecasts updates. Furthermore, a management adjustment of € 17 2020: € 28 relative many payment holidays are granted and which is considered at risk. Given positive developments among upstream oil book of € 25 however a new € 39 higher risk in the book due to the leveraged nature of the book. Analysis on sensitivity (*) The table below presents the analysis on the sensitivity of key forward-looking macroeconomic inputs used in ECL collective-assessment modelling process and the probability-weights applied to each of the three scenarios. The countries included in the analysis are the most significant geographic regions, in terms of both contribution to reportable ECL, and sensitivity of ECL to forward-looking macroeconomics. Accordingly, ING considers these portfolios to present the most significant risk of a material change to the carrying amount financial assets within the next financial year. ING also observes that, in general, the Wholesale Banking business is more sensitive to the impact of forward-looking macroeconomic scenarios. The purpose of the sensitivity analysis is to enable the based reportable ECL from the upside and downside scenario. The table does not adjustments, except for the overlay for time lag in defaults of € 296 In the table below the Real GDP is presented in percentage year-on-year change, the unemployment in percentage of total labour force and the house price index (HPI) in percentage year-on year change. While the table does give a high-level indication of the sensitivity of not provide insight into the interdependencies and correlations between different macroeconomic variable inputs. On total ING level, the unweighted ECL for all collective provisioned clients in the upside scenario was € 2,757 2,933 3,307 € 2,973 management adjustments). When compared to the sensitivity analysis of 2020 the macroeconomic inputs forecasts have improved since December 2020. Furthermore the dispersion of the up- around the baseline scenario has been reduced, reflecting the decreased uncertainty Covid-19. The following table shows the sensitivity of the ECL figures to a change in macroeconomic also the unweighted ECL as calculated before applying the scenario probabilities. Sensitivity analysis as at 30 June 2021 2021 2022 2023 Un-weighted ECL (Eur mln) Probability- weighting Reportable ECL (Eur mln) 1 Netherlands Upside scenario Real GDP 3.3 4.5 3.2 341 20 % 382 Unemployment 4.0 4.0 3.2 HPI 11.0 16.3 4.6 Baseline Scenario Real GDP 2.6 3.2 1.9 374 60 % Unemployment 4.8 4.8 4.7 HPI 7.9 2.6 2.5 Downside scenario Real GDP 0.1 0.6 1.0 448 20 % Unemployment 6.1 7.1 7.7 HPI 4.6 -12.6 -0.4 Belgium Real GDP 4.9 4.8 2.6 486 20 % 511 Unemployment 6.4 6.0 5.5 HPI 2.7 2.6 3.5 Baseline Scenario Real GDP 4.2 3.5 2.2 507 60 % Unemployment 7.0 6.4 6.2 HPI 1.9 1.6 2.6 Downside scenario Real GDP 2.6 1.4 1.7 550 20 % Unemployment 8.2 8.5 8.5 HPI 1.1 -0.1 1.7 Germany Upside scenario Real GDP 4.5 5.9 1.9 517 20 % 543 Unemployment 3.3 2.7 2.0 HPI 10.6 6.8 4.0 Baseline Scenario Real GDP 3.3 4.1 1.5 540 60 % Unemployment 4.2 3.8 3.6 HPI 9.4 3.1 0.7 Downside scenario Real GDP 1.3 1.0 0.2 580 20 % Unemployment 5.3 5.4 5.5 HPI 7.9 -1.5 -2.9 United States Upside scenario Real GDP 8.2 5.3 3.0 86 20 % 115 Unemployment 4.3 2.8 2.0 HPI 11.6 8.7 9.9 Baseline Scenario Real GDP 6.6 4.3 2.3 107 60 % Unemployment 4.7 3.8 3.6 HPI 11.1 4.9 4.1 Downside scenario Real GDP 4.4 1.2 0.7 167 20 % Unemployment 6.7 6.7 7.5 HPI 10.2 -0.1 -2.3 1 Sensitivity does only include the effect of time lag overlay, other management adjustments are Sensitivity analysis as at 31 December 2020 2021 2022 2023 Un-weighted ECL (Eur mln) Probability- weighting Reportable ECL (Eur mln) 1 Netherlands Upside scenario Real GDP 5.3 3.3 2.8 383 20 % 468 Unemployment 5.1 3.9 3.0 HPI 8.1 6.3 4.7 Baseline Scenario Real GDP 2.8 2.9 1.9 441 60 % Unemployment 5.8 5.2 4.7 HPI -1.9 -1.6 4.5 Downside scenario Real GDP -4.9 4.8 1.4 636 20 % Unemployment 7.7 7.8 7.9 HPI -12.3 -11.0 4.3 Belgium Real GDP 6.9 3.3 2.4 494 20 % 559 Unemployment 7.3 6.2 5.8 HPI -0.2 4.2 4.8 Baseline Scenario Real GDP 4.5 3.3 2.3 540 60 % Unemployment 7.5 6.3 6.3 HPI -1.7 3.5 3.8 Downside scenario Real GDP -0.4 4.0 2.2 681 20 % Unemployment 9.4 9.1 8.8 HPI -3.6 2.5 2.9 Germany Upside scenario Real GDP 7.6 3.3 1.5 504 20 % 558 Unemployment 3.0 2.2 1.8 HPI 3.5 8.3 6.6 Baseline Scenario Real GDP 3.9 3.4 1.6 541 60 % Unemployment 4.1 3.5 3.5 HPI 0.4 4.8 3.1 Downside scenario Real GDP -2.4 3.5 1.3 662 20 % Unemployment 5.6 5.3 5.6 HPI -3.5 0.8 -0.9 United States Upside scenario Real GDP 5.6 4.1 3.8 93 20 % 189 Unemployment 5.0 3.0 1.9 HPI 6.2 9.4 9.3 Baseline Scenario Real GDP 4.0 3.2 2.5 134 60 % Unemployment 6.0 4.7 4.1 HPI 4.3 4.1 4.0 Downside scenario Real GDP -6.3 6.8 1.9 448 20 % Unemployment 8.5 7.9 7.6 HPI 1.2 -1.9 -2.3 1 Sensitivity does only include the effect of time lag overlay, other management adjustments are Criteria for identifying a significant increase in credit risk (*) All assets and off-balance sheet items that are in scope of IFRS 9 impairment ECL assessment are allocated a 12-month ECL if deemed to belong in stage 1, or a lifetime ECL if deemed to belong in stages 2 and 3. An asset belongs in stage 2 if it is considered to have experienced a significant increase in credit risk since initial origination or purchase. The stage allocation process involves an asset’s derived scenario weighted average PD being assessed against a set of PD threshold bandings, which determines the appropriate staging and ECL. Stage 2 is triggered when either a threshold for absolute change in lifetime PD or relative change in lifetime PD is hit. The thresholds for the absolute change in lifetime PD vary between 75 bps for Retail portfolios, 100 bps for Wholesale and 250 bps for SMEs, based on the characteristics of the specific portfolio. We are however in a transition phase to determine this on a portfolio level, which has been implemented for a Turkish and Polish models which already have deviating lifetime PD thresholds. The threshold for the relative change in lifetime PD is inversely correlated with the PD at origination; the higher the PD at origination, the lower the threshold. Despite this, the relative threshold is sensitive for investment grade assets while the absolute threshold primarily affects speculative grade assets. On ING Group level, the total ECL collective-assessment for performing assets is € 1,418 1,678 time lag overlay into account). The setting of PD threshold bandings requires management judgement, and is a key source of estimation uncertainty. To collectively-assessed assets, which assumed all assets (stage 1 and 2) were below the threshold, and a 12-month ECL. On the same asset base, analysis was run threshold, and apportioned a lifetime ECL. This gave rise to hypothetical collective-assessment ECLs of € 989 million (2020: € 1,242 2,665 3,552 analysis all other ECL risk parameters (except for the stage) were kept equal. It should be noted that the lifetime PD thresholds are not the only drivers of stage allocation. An asset can change stages as a result of being in arrears, being on a Watch List or being forborne, among other triggers. Refer to section 1.7.8 of Note 1 ‘Basis of preparation and accounting policies’ in the year ended December 31, 2020 for an exhaustive list. Furthermore, this analysis is parameters would change when an asset changes stages. Market risk in banking books (*) IBOR transition (*) Interbank offered rates, such as EURIBOR and LIBOR, are widely used benchmarks to set interest rates across a broad range of financial products and contracts. In line with the recommendations from the Financial Stability Board, a fundamental review of the major interest rates benchmarks has been undertaken. For the eurozone, this led to a reform of the EURIBOR benchmark rate and the development of €STR as the recommended risk-free-rate (RFR) to replace EONIA. For LIBOR benchmarks, the reform will include replacing current LIBOR rates with alternative, nearly risk-free rates. SONIA as the replacement rates for USD and GBP LIBOR respectively. This transition process is at different stages and progressing at different speeds, across several major currencies. The reform of EURIBOR was completed in 2019 and consisted of a change to the underlying calculation methodology. The Belgian Financial Services and Markets Authority has granted authorisation with respect to EURIBOR under the EU Benchmarks Regulation. This allows market participants to continue to use EURIBOR both existing and new contracts. its work on developing recommended fallbacks for EURIBOR contracts based on €STR. recommendations will be used by the industry to improve fallback language for both new and existing EURIBOR contracts. EONIA will cease to be published on 3 January 2022 and at that time. The transition of existing contracts and products that rely on EONIA is ongoing. EONIA and €STR are both overnight rates and the spread between them was established and fixed in 2019 so this transition is considered less complex than that for LIBOR. ING has transitioned a large number of accounts in the course of 2021. Clearing houses transitioned EUR cleared derivatives to €STR discounting 2020, leaving the task of processing similar changes to our bilateral arrangements. A key challenge to complete this transition is obtaining active engagement from our clients, which is also noted by other and hence subject to discussion, to identify possible The administrator of LIBOR confirmed on 5 March 2021 its plans for the cessation of most LIBOR of 2021, with an 18 month extended period of publication for the most commonly extended timeline for USD LIBOR is only intended to support existing USD products, as the expectation from U.S. and other key non-U.S. Regulatory Agencies is that USD LIBOR should not be used after the contracts. other LIBOR rates in 2021. alternative rates and transitioning existing GBP/CHF/JPY and derivatives. This aligns with our increasing ability to offer RFR products and for example we have already started participating/arranging SONIA based loans. The financial sector has issued a number of interim key components of this transition. For example significant progress has been made to address deficiencies in derivative fallback clauses. ISDA has issued an IBOR fallback supplement to help ensure clear apply on the discontinuation of certain key IBORs. From the effective date of 25 January 2021, all new derivatives that reference these ISDA definitions parties have also adhered to a protocol to implement these fallbacks into derivative contracts that were entered into before the effective date. If both counterparties adhere to the protocol, these updated fallbacks are automatically incorporated into existing derivative contracts. For loans, various recommendations have been made to help drive consistent inclusion of robust fallbacks and/or rate switch mechanisms for new contracts. These industry recommendations are incorporated into our contract templates used for new lending. Public authorities have also recognised that certain LIBOR contracts do not contain provisions for any alternatives, contain inappropriate alternatives, or cannot be renegotiated or amended prior to the expected cessation of LIBOR. In response, the European Commission Commission the power to replace critical benchmarks if their termination would significantly affect the functioning of the financial markets in the EU. In addition, the UK government has granted additional powers to the FCA to enable the temporary publication of a ‘’synthetic’’ LIBOR using a different methodology and inputs, that could be used to reduce the disruption to any holders of tough legacy contracts. However, there is no certainty as to the conditions the FCA will apply when exercising these powers and the FCA has consequently encouraged users of LIBOR to renegotiate or amend as many contracts as possible before cessation of the relevant LIBOR. ING Group has significant exposures to IBORs on its financial instruments that will be market-wide initiative. The potential discontinuation of intere

Basis of preparation and acco_2

Basis of preparation and accounting policies (Policies)	6 Months Ended
	Jun. 30, 2021
Basis of preparation and accounting policies [abstract]
Reporting entity and authorisation of the Condensed consolidated interim financial statements	1.1 Reporting entity and authorisation of the Condensed consolidated interim financial statements ING Groep N.V. Amsterdam, the Netherlands . Commercial Register of Amsterdam, number 33231073. These Condensed consolidated interim financial period ended 30 June 2021, comprise ING Groep N.V. (the Parent referred to as ING Group. ING Group is a global financial institution with a strong European base, offering a wide range of retail and wholesale banking services to customers in over 40 The ING Group Condensed consolidated interim financial statements, as at and for the six month period ended 30 June 2021, were authorised for issue in accordance with a resolution of 2021. 1.2 Basis of preparation of the Condensed consolidated interim financial statements The ING Group Condensed consolidated interim financial statements have been prepared in accordance with International Accounting Standard 34 ‘ Interim Financial Reporting’. The accounting policies used to prepare the Condensed consolidated interim financial statements are consistent with International Financial Reporting Standards as issued by the International Accounting Standards Board (IFRS-IASB) and are consistent with those set out in the notes to the 2020 Consolidated financial statements as included in the 20-F of ING Group except for the adoption of a number of amendments effective in 2021 as set out in ‘Changes to accounting policies’. The Condensed consolidated interim financial statements should be read in conjunction with Consolidated financial statements as included in the Form 20-F. The ING Group Condensed consolidated interim financial statements have been prepared on a going concern basis.
Basis of preparation of the Condensed consolidated interim financial statements	1.2 Basis of preparation of the Condensed consolidated interim financial statements The ING Group Condensed consolidated interim financial statements have been prepared in accordance with International Accounting Standard 34 ‘ Interim Financial Reporting’. The accounting policies used to prepare the Condensed consolidated interim financial statements are consistent with International Financial Reporting Standards as issued by the International Accounting Standards Board (IFRS-IASB) and are consistent with those set out in the notes to the 2020 Consolidated financial statements as included in the 20-F of ING Group except for the adoption of a number of amendments effective in 2021 as set out in ‘Changes to accounting policies’. The Condensed consolidated interim financial statements should be read in conjunction with Consolidated financial statements as included in the Form 20-F. The ING Group Condensed consolidated interim financial statements have been prepared on a going concern basis. The Condensed consolidated interim financial statements are presented in euros and rounded to the nearest million, unless stated otherwise. Amounts may not add up due to rounding. 1.2.1 Presentation of Risk management disclosures Certain disclosures of the nature and extent of risks related to financial instruments as disclosed in the 2020 ING Group Consolidated financial statements and included in the 2020 ING Group Annual are updated and take into account Covid-19 developments in the first six months of 2021. Although these disclosures are included in the ‘Risk management’ Group Condensed consolidated interim financial statements. The disclosures are indicated by the symbol (*). Chapters, paragraphs, graphs or tables within the risk management section that are indicated with this symbol in the respective headings or table header are considered to be an integral part of the Condensed interim financial statements. 1.2.2 Reconciliation between IFRS-EU and IFRS-IASB The 2020 ING Group Consolidated financial statements and the 2021 ING Group Condensed interim financial statements are prepared in accordance with IFRS-EU. IFRS-EU refers to International Financial Reporting Standards (‘IFRS’) as adopted by the European Union (EU), including the decisions with regard to the options available under IFRS as adopted by the EU. IFRS-EU differs from IFRS-IASB in respect of certain paragraphs in IAS 39 ‘Financial Instruments: Recognition and Measurement’ accounting for portfolio hedges of interest rate risk.
Presentation of Risk management disclosures	1.2.1 Presentation of Risk management disclosures Certain disclosures of the nature and extent of risks related to financial instruments as disclosed in the 2020 ING Group Consolidated financial statements and included in the 2020 ING Group Annual are updated and take into account Covid-19 developments in the first six months of 2021. Although these disclosures are included in the ‘Risk management’ Group Condensed consolidated interim financial statements. The disclosures are indicated by the symbol (*). Chapters, paragraphs, graphs or tables within the risk management section that are indicated with this symbol in the respective headings or table header are considered to be an integral part of the Condensed interim financial statements.
Reconciliation between IFRS-EU and IFRS-IASB	1.2.2 Reconciliation between IFRS-EU and IFRS-IASB The 2020 ING Group Consolidated financial statements and the 2021 ING Group Condensed interim financial statements are prepared in accordance with IFRS-EU. IFRS-EU refers to International Financial Reporting Standards (‘IFRS’) as adopted by the European Union (EU), including the decisions with regard to the options available under IFRS as adopted by the EU. IFRS-EU differs from IFRS-IASB in respect of certain paragraphs in IAS 39 ‘Financial Instruments: Recognition and Measurement’ accounting for portfolio hedges of interest rate risk. Under IFRS-EU, ING Group applies fair value hedge accounting for portfolio hedges of interest rate risk (fair value macro hedges) in accordance with the EU carve-out version of IAS 39. Under hedge accounting may be applied, in respect of fair value macro hedges, to core deposits and hedge ineffectiveness is only recognised when the revised estimate of the amount of cash flows in scheduled time buckets falls below the original designated amount of that bucket and is not recognised when the revised amount of cash flows in scheduled time buckets is more than the original designated hedge accounting for fair value macro hedges cannot be applied to core deposits and ineffectiveness arises whenever the revised estimate of the amount of cash flows in scheduled time buckets is either more or less than the original designated amount of that bucket. This information is prepared by reversing the hedge accounting impacts that are applied under the EU ‘carve- out’ version of IAS 39. Financial information under IFRS-IASB accordingly possibility that had ING Group applied IFRS-IASB as its primary alternative hedge strategies where those alternative hedge strategies could have qualified for IFRS-IASB compliant hedge accounting. These decisions could have resulted in different shareholders’ equity and net result amounts compared to those indicated in this Condensed consolidated interim financial Form 6-K. In the first six months of 2021, interest yield increased resulting in a positive EU IAS39 carve out (EUR 956 (EUR -493 trading income’ in the statement of profit or loss. between IFRS-EU and IFRS-IASB is included below. Reconciliation net result under IFRS-EU and IFRS-IASB 1 January to 30 June in EUR million 2021 2020 In accordance with IFRS-EU (attributable to the shareholders of 2,464 969 Adjustment of the EU IAS 39 carve-out 956 -493 Tax effect 1 -260 115 Effect of adjustment after tax 697 -379 In accordance with IFRS-IASB (attributable to the shareholders of the parent) 3,161 591 Non-controlling interests 59 36 In accordance with IFRS-IASB Total 3,219 626 1 includes the effect of changes in tax rate. Reconciliation shareholders’ equity under IFRS-EU and IFRS-IASB in EUR million 30 June 2021 31 December 2020 In accordance with IFRS-EU (attributable to the shareholders of 56,222 54,637 Adjustment of the EU IAS 39 carve-out -3,132 -4,081 Tax effect 805 1,063 Effect of adjustment after tax -2,327 -3,018 Shareholders’ equity 53,896 51,619 Non-controlling interests 987 1,022 In accordance with IFRS-IASB Total 54,883 52,640
Impact of Covid 19	1.3 Impact of Covid-19 After the outbreak of the Covid-19 pandemic in 2020, schemes for borrowers impacted by Covid-19. As at 30 June 2021 ING Group had approximately EUR 2.0 of loans outstanding under these programs (31 December 2020: EUR 1.5 In Wholesale Banking the main schemes are being Scheme (“GO-C”)), in France (state-guarantee scheme Bpifrance) and Germany (guaranteed by KfW). In Retail Banking these facilities include in the Netherlands the SME Credit the small credit facility (“Klein Krediet Corona” or KKC) for self-employed individuals. In 2020 ING Group started an initiative with European Investment Bank to lend nearly EUR 800 favorable terms to Dutch small and medium-sized enterprises that are affected by the economic impact of Covid-19 and loans under this program have been recognized on the balance sheet of ING as from 2021. Similar facilities are also offered by ING Group in other countries, mainly in Belgium and provided in 2020 loans under the state guarantee scheme GS1 which establishes risk sharing and the government. It applies to new loans to non-financial companies, SME certain conditions. ING Bank Poland signed an agreement with BGK support clients with individual guarantee schemes, provided by BGK as a collateral (equivalent to a state guarantee). Loans that have been originated under the above programs have been recognized on the consolidated statement of financial position of ING Group. Depending on the scheme, integral or non-integral to the origination of these loans. Following this, the guarantees are either reflected in the expected credit losses (ECL) associated with these loans or as separate reimbursement asset, respectively. In either case, such guarantees have a similar impact on the statement of profit or loss and both reduce amount presented as ‘addition to loan loss provisions’. In 2020 governments in almost all countries where ING Retail bank is active adopted measures providing for payment holidays to private individuals and small business loans. In the six month period most of these payment holiday programs expired. As at 30 June 2021, approximately 159 were granted payment holidays in the context of the Covid-19 pandemic (down from 196 December 2020 due to reimbursements and prepayments). The total exposure of loans for which a payment holiday is granted amounts to EUR 17.5 19.4 which 96 % has expired. The modification of contractual terms of loans subject to payment holiday arrangements does not automatically result in derecognition of the financial assets. Where applicable, financial asset has been recalculated as the present value of the renegotiated or modified contractual cash flows, discounted at the original effective interest rate and a gain or loss was recognized. This did not have a material impact on the profit or loss statement of ING Group. As a result of the economic effects of Covid-19 estimation uncertainty and level of management judgement increased compared to before the Covid-19 pandemic in certain areas, such as the impairment assessment loan loss provisions (including the need for management adjustments). Please ‘Significant judgements and critical accounting estimates and assumptions’.
Changes in IFRS Effective in 2021	1.4.1 Changes in IFRS effective in 2021 The following amended standards became effective in the current reporting period: ● Amendments to IFRS 9 ‘Financial Instruments’, IAS 39 ‘Financial Instruments: Recognition and Measurement’, IFRS 16 ‘Leases’, Disclosures’: ‘IBOR Reform and its Effects on Financial Reporting – Phase 2’ (issued in August 2020); ● Amendments to IFRS 16 ‘Leases’: ‘Covid-19-Related Rent Concessions’ (issued in May 2020). The IBOR Reform – Phase 2 amendments relate mainly to accounting for changes in the basis for determining the contractual cash flows of financial assets and liabilities due to the IBOR accounting when an existing benchmark rate is reformed or replaced with an alternative risk free rate. Specifically, Phase 2 amendments require that the effective interest rate adjusted, and hedge accounting will continue on transition to risk free rates, but only to the extent that the modifications made to financial instruments are those necessary new basis for calculating cash flows is ‘economically equivalent’ to the previous basis. By applying these mandatory amendments, ING Group avoids recognising modification gains and losses on would otherwise be required in the absence of Phase 2 amendments. accounting discontinuations when modifying both hedged items and hedging the IBOR reform that would otherwise be required in the absence of Phase 2 amendments. Management’ section – ‘Market Risk’ for more details. The amendments to IFRS 16 ‘Leases’ provide lessees with an related rent concession is a lease modification. As ING Group did not receive rent concessions as a lessee, these amendments had no impact on the accounting policies ING Group has not early adopted any standard, interpretation or amendment which has been issued, but is yet effective. For further information, reference is made to Note 1 ‘Basis of preparation and accounting policies’, paragraph 1.4.2 ‘Upcoming changes in IFRS after 2020’ in the 2020 ING Group Consolidated
Significant judgements and critical accounting estimates and assumptions	1.5 Significant judgements and critical accounting estimates and assumptions The preparation of the Condensed consolidated interim financial statements requires management to make judgements in the process of applying its accounting policies estimates and assumptions affect the reported amounts of the assets and liabilities and contingent assets and contingent liabilities at the balance sheet date, as well as reported income and expenses for the period. The actual outcome may differ from these estimates. The process of setting assumptions is subject to internal control procedures and approvals. Consistent with Note 1.5 ‘Significant judgements and critical accounting estimates and assumptions’ of 2020 ING Group Consolidated financial statements, the following areas continue to require management to make significant judgements and use critical accounting estimates and assumptions based on the and financial data that may change in future periods: ● Loan loss provisions (financial assets); ● The determination of the fair values of financial assets and liabilities; ● Impairment assessment of non-financial assets; ● Impairment assessment of an investment in associate; ● Provisions; and ● Accounting for Targeted Of particular note to the six month period ended 30 June areas of Loan loss provisions and TLTRO. For Loan loss provisions this resulted in Covid-19 related management adjustment to the model-based Expected Credit Losses. The Covid-19 management adjustment amounts to EUR 595 June 2021 and relates to Payment Holidays and other government support measures (EUR 260 time lag in defaults materialising (EUR 296 39 million). This is a decrease of EUR 68 Under the TLTRO III program, it is ING Group’s policy to recognise the conditional interest receivable only when ING has a reasonable expectation that the lending growth targets will be met. ING Group interprets reasonable expectations as highly probable, i.e. the probability of meeting the lending the probability that it will not. As a result, if interest income is recognised during the expectation of meeting the targets, there should be only a limited possibility that the reversed in future periods. For details on the conditions of the TLTRO III programme and amount of interest income recognised in the reporting period, refer to Note 7 ‘Deposits from banks’ and Note 12 ‘Net interest income’ respectively.

Basis of preparation and acco_3

Basis of preparation and accounting policies (Tables)	6 Months Ended
	Jun. 30, 2021
Basis of preparation and accounting policies [abstract]
Reconciliation net result under IFRS-EU and IFRS-IASB	Reconciliation net result under IFRS-EU and IFRS-IASB 1 January to 30 June in EUR million 2021 2020 In accordance with IFRS-EU (attributable to the shareholders of 2,464 969 Adjustment of the EU IAS 39 carve-out 956 -493 Tax effect 1 -260 115 Effect of adjustment after tax 697 -379 In accordance with IFRS-IASB (attributable to the shareholders of the parent) 3,161 591 Non-controlling interests 59 36 In accordance with IFRS-IASB Total 3,219 626 1 includes the effect of changes in tax rate.
Reconciliation shareholders' equity under IFRS-EU and IFRS-IASB	Reconciliation shareholders’ equity under IFRS-EU and IFRS-IASB in EUR million 30 June 2021 31 December 2020 In accordance with IFRS-EU (attributable to the shareholders of 56,222 54,637 Adjustment of the EU IAS 39 carve-out -3,132 -4,081 Tax effect 805 1,063 Effect of adjustment after tax -2,327 -3,018 Shareholders’ equity 53,896 51,619 Non-controlling interests 987 1,022 In accordance with IFRS-IASB Total 54,883 52,640

Financial assets at fair valu_3

Financial assets at fair value through profit or loss (Tables)	6 Months Ended
	Jun. 30, 2021
Disclosure Of Financial Assets [Line Items]
Summary of financial assets at fair value through profit or loss	Financial assets at fair value through profit or loss in EUR million 30 June 2021 31 December 2020 Trading assets 50,652 51,356 Non-trading derivatives 2,112 3,583 Designated at fair value through profit or loss 5,421 4,126 Mandatorily measured at fair value through profit or loss 63,217 44,305 121,402 103,370
Summary of exposure to (reverse) repurchase agreements	Exposure to (reverse) repurchase agreements in EUR million 30 June 2021 31 December 2020 Reverse repurchase transactions Loans and advances to banks 4,463 4,869 Loans and advances to customers 1 624 Trading assets, loans and receivables 9,939 10,947 Loans and receivables measured at mandatorily fair value through 60,124 41,735 74,526 58,175 Repurchase transactions Deposits from banks 4,666 1,971 Trading liabilities, funds on deposit 6,658 5,787 Funds entrusted measured at designated at fair value through 51,457 41,177 62,781 48,935

Financial assets at fair valu_4

Financial assets at fair value through other comprehensive income (Tables)	6 Months Ended
	Jun. 30, 2021
Financial assets at fair value through other comprehensive income [Abstract]
Summary of financial assets at fair value through other comprehensive income	Financial assets at fair value through other comprehensive income by type in EUR million 30 June 2021 31 December 2020 Equity securities 2,434 1,862 Debt securities 1 29,693 32,977 Loans and advances 1 889 1,056 33,016 35,895 1 Debt securities include an amount of EUR -12 -12 -1 million (31 December 2020: EUR -2
Summary of equity securities designated as at fair value through other comprehensive income	Exposure to equity securities Equity securities designated as at fair value through other comprehensive Carrying value Dividend income 30 June 2021 31 December 2020 1 January to 30 June in EUR million 2021 2020 Investment in Bank of Beijing 1,748 1,662 Other Investments 686 200 15 2 2,434 1,862 15 2
Summary of changes in fair value through other comprehensive income financial assets	Changes in fair value through other comprehensive income financial assets FVOCI equity securities FVOCI debt instruments 1 Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance as at 1 January 1,862 2,306 34,033 32,163 35,895 34,468 Additions 504 13 8,877 16,936 9,381 16,949 Amortisation -7 -9 -7 -9 Transfers -16 -107 0 -16 -107 Changes in unrealised revaluations 2 9 -283 -694 520 -685 237 Impairments -1 -2 -1 -2 Reversals of impairments 1 -4 1 -4 Disposals and redemptions -1 -13 -11,800 -14,557 -11,802 -14,571 Exchange rate differences 76 -53 171 -1,017 247 -1,070 Changes in the composition of the group and other changes 0 -0 2 2 2 2 Closing balance 2,434 1,862 30,582 34,033 33,016 35,895 1 Fair value through other comprehensive income debt instruments includes both debt securities and loans and advances. 2 Changes in unrealised revaluations of FVOCI debt instruments include changes on hedged items which are recognised in the statement of profit or loss. Reference is made to Note 11 ‘Equity’ for details on the changes in revaluation reserve.

Loans and advances to custome_2

Loans and advances to customers (Tables)	6 Months Ended
	Jun. 30, 2021
Loans and advances to customers [abstract]
Summary of loans and advances to customers	Loans and advances to customers by type in EUR million 30 June 2021 31 December 2020 Loans to, or guaranteed by, 41,936 41,502 Loans secured by mortgages 356,786 352,130 Loans guaranteed by credit institutions 5,810 5,201 Personal lending 27,138 27,794 Corporate loans 181,453 173,121 613,123 599,749 Loan loss provisions -5,347 -5,779 607,777 593,970

Investment in associates and _2

Investment in associates and joint ventures (Tables)	6 Months Ended
	Jun. 30, 2021
Investment in associates and joint ventures [Abstract]
Summary of investments in associates and joint ventures	Investments in associates and joint ventures in EUR million 30 June 2021 Interest held (%) Fair value of listed invest- ments Balance sheet value Total assets Total liabilities Total income Total expenses TMBThanachart Bank Public Company Limited 23 652 1,166 47,077 41,631 442 352 Other investments in associates and joint ventures 295 1,461 Investments in associates and joint ventures in EUR million 31 December 2020 Interest held (%) Fair value of listed invest- ments Balance sheet value Total assets Total liabilities Total income Total expenses TMBThanachart Bank Public Company Limited 23 653 1,202 50,123 44,597 1,388 1,093 Other investments in associates and joint ventures 273 1,475
Summary of changes in investments in associates and joint ventures	Changes in Investments in associates and joint ventures in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 1,475 1,790 Additions 31 24 Revaluations 4 -3 Share of results 23 66 Dividends received -31 -12 Disposals -6 -12 Impairments -3 -235 Exchange rate differences -45 -144 Other 13 0 Closing balance 1,461 1,475

Deposits from banks (Tables)

Deposits from banks (Tables)	6 Months Ended
	Jun. 30, 2021
Deposits from Banks [abstract]
Schedule of deposits from banks by type	Deposits from banks by type in EUR million 30 June 2021 31 December 2020 Non-interest bearing 784 792 Interest bearing 88,350 77,306 89,134 78,098

Financial liabilities at fair_2

Financial liabilities at fair value through profit or loss (Tables)	6 Months Ended
	Jun. 30, 2021
Financial liabilities at fair value through profit or loss [abstract]
Summary of financial liabilities at fair value through profit or loss	Financial liabilities at fair value through profit or loss in EUR million 30 June 2021 31 December 2020 Trading liabilities 26,845 32,709 Non-trading derivatives 1,925 1,629 Designated at fair value through profit or loss 58,370 48,444 87,141 82,781

Debt securities in issue (Table

Debt securities in issue (Tables)	6 Months Ended
	Jun. 30, 2021
Debt securities in issue [Abstract]
Changes in debt securities in issue	Changes in debt securities in issue in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 82,065 118,528 Additions 42,208 65,308 Redemptions / Disposals -32,233 -99,212 Exchange rate differences 955 -3,403 Other movements -1,156 844 Closing balance 91,840 82,065

Subordinated loans (Tables)

Subordinated loans (Tables)	6 Months Ended
	Jun. 30, 2021
Subordinated loans [abstract]
Schedule of subordinated loans by group companies	Subordinated loans by group companies in EUR million 30 June 2021 31 December 2020 ING Groep N.V. 13,795 13,150 ING Group companies 996 2,654 14,791 15,805
Schedule of changes in subordinated loans	Changes in subordinated loans in EUR million 30 June 2021 31 December 2020 Opening balance as at 1 January 15,805 16,588 New issuances 491 2,165 Repayments -1,455 -2,786 Exchange rate differences and other -49 -163 Closing balance 14,791 15,805

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2021
Summary of equity	Total equity in EUR million 30 June 2021 31 December 2020 Share capital and share premium 39 39 17,105 17,089 17,144 17,128 Other reserves 1,270 1,181 173 309 873 1,450 -100 -117 215 221 -278 -307 -3,485 -3,636 3,209 3,246 -8 -4 1,870 2,342 Retained earnings 34,882 32,149 Shareholders’ equity (parent) 53,896 51,619 Non-controlling interests 987 1,022 Total equity 54,883 52,640

Net interest income (Tables)

Net interest income (Tables)	6 Months Ended
	Jun. 30, 2021
Net interest income [abstract]
Summary of net interest income	Net interest income 1 January to 30 June 1 January to 30 June in EUR million 2021 2020 2021 2020 Interest income on loans 6,999 8,333 Interest expense on deposits from banks 71 113 Interest income on financial assets at fair value through OCI 189 283 Interest expense on customer deposits 479 823 Interest income on debt securities at amortised cost 223 263 Interest expense on debt securities in issue 621 1,005 Interest income on non-trading derivatives (hedge accounting) 1,131 1,769 Interest expense on subordinated loans 271 323 Negative interest on liabilities 770 288 Negative interest on assets 276 117 Total interest 9,313 10,935 Interest expense on non-trading derivatives (hedge accounting) 817 1,779 Total interest 2,534 4,160 Interest income on financial assets at fair value through profit 220 450 Interest income on non-trading derivatives (no hedge accounting) 1,140 556 Interest expense on financial liabilities at fair value through profit 158 348 Interest income other 8 21 Interest expense on non-trading derivatives (no hedge accounting) 934 540 Total other interest 1,368 1,026 Interest expense on lease liabilities 7 11 Total interest 10,680 11,962 Interest expense other 26 25 Total other interest 1,125 925 Total interest 3,659 5,085 Net interest income 7,021 6,877

Net fee and commission income (

Net fee and commission income (Tables)	6 Months Ended
	Jun. 30, 2021
Net fee and commission income [abstract]
Schedule of fee and commission income	Fee and commission income 1 January to 30 June in EUR million 2021 2020 Funds transfer 727 686 Securities business 487 439 Insurance broking 117 101 Asset management fees 146 115 Brokerage and advisory fees 374 321 Other 588 644 2,439 2,307
Schedule of fee and commission expense	Fee and commission expenses 1 January to 30 June in EUR million 2021 2020 Funds transfer 259 301 Securities business 84 80 Insurance broking 1 0 Asset management fees 5 3 Brokerage and advisory fees 185 157 Other 195 260 729 801

Other income (Tables)

Other income (Tables)	6 Months Ended
	Jun. 30, 2021
Other income [abstract]
Details Of Other Income [Text Block]	Other income 1 January to 30 June in EUR million 2021 2020 Share of result associates and joint ventures 20 34 Net result derecognition of financial assets measured -3 187 Other 166 48 184 269

Other operating expenses (Table

Other operating expenses (Tables)	6 Months Ended
	Jun. 30, 2021
Other operating expenses [Abstract]
Summary of other operating expenses	Other operating expenses 1 January to 30 June in EUR million 2021 2020 Regulatory costs 759 663 Audit and non-audit services 16 14 IT related expenses 387 388 Advertising and public relations 149 166 External advisory fees 147 186 Office expenses 141 163 Travel and accommodation 24 43 Contributions and subscriptions 59 56 Postal charges 20 21 Depreciation of property and equipment 285 281 Amortisation of intangible assets 133 121 Impairments and reversals of impairments of tangible and intangible assets 23 333 Addition to / (unused amounts reversed of) provision for reorganisations 88 -2 Addition to / (unused amounts reversed of) other provisions 49 -14 Other 341 284 2,621 2,703

Earnings per ordinary share (Ta

Earnings per ordinary share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings per ordinary share [abstract]
Summary of earnings per ordinary share	Earnings per ordinary share Weighted average number of ordinary Amount during the period Per ordinary share (in EUR million) (in millions) (in EUR) 1 January to 30 June 1 January to 30 June 1 January to 30 June 2021 2020 2021 2020 2021 2020 Basic earnings 3,161 591 3,901.9 3,897.9 0.81 0.15 Basic earnings from continuing operations 3,161 591 0.81 0.15 Effect of dilutive instruments: Stock option and share plans 1.6 0.5 1.6 0.5 Diluted earnings 3,161 591 3,903.5 3,898.5 0.81 0.15 Diluted earnings from continuing operations 3,161 591 0.81 0.15

Segments (Tables)

Segments (Tables)	6 Months Ended
	Jun. 30, 2021
Segments [abstract]
Summary of reconciliation between IFRS and underlying income, expenses and net result	Reconciliation between IFRS-IASB and IFRS-EU income, expense and net result 2021 2020 in EUR million 6 month period 1 January to 30 June Income Expenses Taxation Non- controlling interests Net result 1 Income Expenses Taxation Non- controlling interests Net result 1 Net result IFRS-IASB attributable to equity holder of the parent 10,175 5,691 1,265 59 3,161 8,688 7,623 438 36 591 Remove impact of: Adjustment of the EU 'IAS 39 carve out' 2 -956 -260 -697 493 115 379 Result IFRS-EU 3 9,219 5,691 1,005 59 2,464 9,182 7,623 553 36 969 1. Net result, after tax and non-controlling interests. 2. ING prepares the Form 6-K in accordance with IFRS-IASB. This information is prepared by reversing the hedge accounting impacts that applied under the EU 'carve-out' version of IAS 39. For the IFRS-EU result, the impact of the carve-out is re-instated as this is the measure at which management monitors the business. 3. IFRS-EU figures are derived from figures according to IFRS-IASB by excluding the impact of adjustment of the EU 'IAS 39 carve-out'.
Schedule of ING Group total	ING Group Total 2021 2020 in EUR million 6 month period 1 January to 30 June ING Bank N.V. Other Total ING Group ING Bank N.V. Other Total ING Group Income – Net interest income 6,852 0 6,853 6,931 0 6,931 – Net fee and commission income 1,710 -0 1,710 1,507 -1 1,506 – Total investment 653 4 656 760 -16 745 Total income 9,215 4 9,219 9,198 -16 9,182 Expenditure – Operating expenses 5,553 6 5,560 5,625 1 5,626 – Addition to loan loss provisions 131 -0 131 1,997 0 1,998 Total expenses 5,685 6 5,691 7,623 1 7,623 Result before taxation 3,530 -2 3,528 1,575 -17 1,558 Taxation 1,005 0 1,005 519 34 553 Non-controlling interests 59 0 59 36 36 Net result IFRS-EU 2,467 -2 2,464 1,021 -51 969 Adjustment of the EU 'IAS 39 carve out' 697 697 -379 -379 Net result IFRS-IASB attributable to equity holder of the parent 3,163 -2 3,161 642 -51 591
Summary of segments banking by line of business	Segments by line of business 2021 2020 in EUR million 6 month period Retail Netherlands Retail Belgium Retail Germany Retail Other Wholesale Banking Corporate Line Total Retail Netherlands Retail Belgium Retail Germany Retail Other Wholesale Banking Corporate Line Total 1 January to 30 June Income – 1,651 894 734 1,354 2,044 174 6,853 1,763 937 801 1,392 1,864 173 6,931 – 368 248 257 253 580 4 1,710 332 207 215 193 561 -2 1,506 – 119 99 45 122 267 5 656 175 71 59 134 354 -48 745 Total income 2,138 1,241 1,036 1,729 2,891 184 9,219 2,269 1,215 1,075 1,720 2,780 123 9,182 Expenditure – 1,181 912 604 1,174 1,452 237 5,560 1,088 969 567 1,120 1,728 154 5,626 – -65 194 19 102 -119 -0 131 139 282 14 304 1,256 3 1,998 Total exp 1,116 1,107 623 1,276 1,333 237 5,691 1,227 1,251 581 1,424 2,984 156 7,623 Result before taxation 1,022 134 413 454 1,558 -53 3,528 1,043 -36 494 295 -204 -34 1,558 Taxation 267 41 135 117 355 89 1,005 262 9 188 85 23 -14 553 Non-controlling interests 0 2 46 10 -0 59 -1 0 2 27 8 -0 36 Net result IFRS-EU 754 94 275 291 1,192 -142 2,464 781 -44 304 183 -235 -19 969 Adjustment of the EU 'IAS 39 carve out' 697 697 -379 -379 Net result IFRS-IASB 754 94 275 291 1,889 -142 3,161 781 -44 304 183 -614 -19 591
Summary of geographical segments banking	Geographical split of the segments 2021 2020 in EUR million 6 month period 1 January to 30 June Netherlands Belgium Germany Other Challengers Growth Markets Wholesale Banking Rest of World Other Total Netherlands Belgium Germany Other Challengers Growth Markets Wholesale Banking Rest of World Other Total Income – 2,023 1,072 1,010 974 749 850 175 6,853 2,097 1,090 1,059 893 799 823 169 6,931 – Net fee and commission income 518 356 263 161 163 246 4 1,710 494 302 228 136 131 217 -3 1,506 – other income 148 127 78 45 154 101 5 656 197 98 80 14 203 197 -44 745 Total income 2,688 1,554 1,350 1,179 1,066 1,197 184 9,219 2,788 1,491 1,367 1,043 1,133 1,237 123 9,182 Expenditure – 1,577 1,065 691 724 636 629 237 5,560 1,736 1,126 652 669 644 644 155 5,626 – provision -51 139 43 55 45 -101 -0 131 320 338 241 212 205 678 3 1,998 Total expenses 1,526 1,205 734 779 681 529 237 5,691 2,056 1,465 893 882 849 1,322 158 7,623 Result before taxation 1,162 349 616 400 384 669 -53 3,528 732 26 474 162 284 -85 -35 1,558 Retail Banking 1,022 134 413 160 294 2,023 1,043 -36 494 74 222 1,796 Wholesale Banking 140 215 203 240 91 669 0 1,558 -310 62 -20 88 62 -85 -2 -204 Corporate Line -53 -53 -34 -34 Result before taxation 1,162 349 616 400 384 669 -53 3,528 732 26 474 162 284 -85 -35 1,558 Taxati 298 92 186 121 83 137 87 1,005 252 25 170 56 71 -10 -10 553 Non-controlling interests 0 2 57 -0 59 -1 0 2 35 -0 36 Net result IFRS-EU 864 257 428 279 245 531 -140 2,464 481 2 302 106 178 -74 -25 969 Adjustment of the EU 'IAS 39 carve out' 477 35 185 -1 697 -338 3 -97 53 -379 Net result IFRS-IASB 1,341 292 613 279 245 531 -140 3,161 143 5 205 159 178 -74 -25 591

Fair value of assets and liab_2

Fair value of assets and liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Fair value of assets and liabilities [abstract]
Summary of valuation adjustment	Valuation adjustment on financial assets and liabilities in EUR million 30 June 2021 31 December 2020 Bid/Offer -111 -121 Model Risk -17 -25 CVA -180 -238 DVA -92 -124 CollVA -14 -16 FVA -91 -111 Total Valuation -505 -634
Methods applied in determining fair values of financial assets and liabilities	Methods applied in determining fair values of financial assets and liabilities (carried at fair value) Level 1 Level 2 Level 3 Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Financial Assets Financial assets at fair value through profit or loss 13,976 7,897 2 2 144 138 14,123 8,037 3,755 3,378 6,556 4,867 1,250 1,269 11,561 9,514 9 1 22,761 30,623 129 197 22,898 30,821 70,971 53,733 1,849 1,265 72,820 54,998 17,740 11,276 100,290 89,225 3,372 2,870 121,402 103,370 Financial assets at fair value through other comprehensive income 2,266 1,687 168 176 2,434 1,862 28,522 31,592 1,171 1,385 29,693 32,977 889 1,056 889 1,056 30,788 33,279 1,171 1,385 1,057 1,231 33,016 35,895 Financial liabilities Financial liabilities at fair value through profit or loss – 862 1,124 5,047 5,231 168 180 6,077 6,534 – 1 59,319 48,111 4 2 59,323 48,114 – 735 699 69 70 804 768 – 62 55 20,715 27,094 160 217 20,937 27,365 1,658 1,879 85,151 80,505 331 398 87,141 82,781
Valuation techniques and range of unobservable inputs	Valuation techniques and range of unobservable Assets Liabilities Valuation techniques Significant unobservable inputs Lower range Upper range in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 At fair value through profit or loss Debt securities 1,250 1,269 Price based Price (%) 0 % 0 % 104 % 107 % Equity securities 144 137 1 Price based Price (EUR) 0 0 5475 5475 Loans and advances 1,363 1,090 4 2 Price based Price (%) 0 % 0 % 101 % 101 % Present value techniques Credit spread (bps) 0 0 250 250 (Reverse) repo's 486 176 Present value techniques Interest rate (%) 3 % 3 % 4 % 4 % Structured notes 168 180 Price based Price (%) 84 % 74 % 118 % 109 % Option pricing model Equity volatility (%) 14 % 14 % 25 % 25 % Equity/Equity correlation n.a. 0.6 n.a. 0.9 Equity/FX correlation -0.3 -0.7 -0.3 0.3 Dividend yield (%) 2 % 0 % 5 % 5 % Derivatives – 4 2 35 38 Option pricing model Interest rate volatility (bps) 15 12 74 70 Present value techniques Reset spread (%) 2 % 2 % 2 % 2 % – 1 Option pricing model FX volatility (bps) n.a. 6 n.a. 10 – 93 168 96 154 Present value techniques Credit spread (bps) 2 2 599 1,403 Price based Price (%) 99 % 99 % 100 % 107 % – 30 24 26 20 Option pricing model Equity volatility (%) 5 % 5 % 83 % 64 % Equity/Equity correlation 0.5 0.5 0.8 0.9 Equity/FX correlation -0.5 -0.6 0.1 0.1 Dividend yield (%) 0 % 0 % 20 % 34 % Price based Price (%) 3 % 3 % 3 % 3 % – 1 3 2 3 Option pricing model Commodity volatility (%) 15 % 18 % 79 % 55 % Com/FX correlation n.a. -0.5 n.a. -0.3 At fair value through other comprehensive income – 889 1,056 Present value techniques Prepayment rate (%) 9 % 9 % 9 % 9 % Price based Price (%) 99 % 99 % 100 % 99 % – 168 176 Present value techniques Credit spread (bps) 1 2 1 2 Interest rate (%) 3 % 3 % 3 % 3 % Price based Price n.a. n.a. n.a. n.a. Other - 63 80 80 Total 4,429 4,101 331 398
Changes in level 3 financial assets	Changes in Level 3 Financial assets Trading assets Non-trading derivatives Financial assets mandatorily at FVPL Financial assets designated at FVPL Financial assets at FVOCI Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance 882 174 1 8 1,191 1,381 796 1,244 1,231 1,961 4,101 4,768 Realised gain/loss 5 -61 0 -1 12 -104 -0 -198 -8 -19 10 -383 Revaluation recognised in other comprehensive income during the period -8 -46 -8 -46 Purchase of assets 14 453 3 3 834 1,180 489 212 54 39 1,393 1,887 Sale of assets -32 -73 -3 -8 -265 -973 -25 -270 -147 -419 -472 -1,743 Maturity/settlement -8 -39 -1 -21 -83 -12 -57 -53 -175 -94 -354 Reclassifications -16 330 -13 -105 -29 224 Transfers 14 517 6 1 -3 -1 11 523 Transfers -496 -90 0 -528 -138 -496 -755 Exchange rate differences 0 0 7 -24 3 -4 10 -27 Changes in the composition of the group and other changes 1 5 0 1 1 6 Closing balance 379 882 2 1 1,743 1,191 1,248 796 1,057 1,231 4,429 4,101 1 includes EUR 35 312 2 through other comprehensive income’.
Changes in level 3 financial liabilities	Changes in Level 3 Financial liabilities Trading liabilities Non-trading derivatives Financial liabilities designated as at fair value through profit or loss Total in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Opening balance 180 195 39 110 180 184 398 490 Realised gain/loss recognised in the statement of profit or loss during the period 1 57 -2 -2 20 22 -22 77 -4 Additions 16 55 3 19 62 662 81 736 Redemptions -2 -116 -3 -45 -159 -90 -164 -250 Maturity/settlement -39 -11 -0 -52 -0 -83 -40 -146 Transfers 14 170 8 228 267 242 445 Transfers -96 -111 -3 -23 -165 -738 -264 -873 Closing balance 130 180 33 39 168 180 331 398 1 EUR 77 -4
Sensitivity analysis of level 3 instruments	Sensitivity analysis of Level 3 instruments Positive fair value movements from using reasonable possible alternatives Negative fair value movements from using reasonable possible alternatives in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Equity (equity derivatives, structured notes) 3 33 -21 -14 Interest rates (Rates derivatives, 15 20 -1 -1 Credit (Debt securities, Loans, structured notes, credit derivatives) 68 43 -27 -27 86 96 -49 –42
Fair value of assets and liabilities at amortised cost	Methods applied in determining fair values of financial assets and liabilities (carried at amortised cost) Carrying Amount Carrying amount approximates fair value Level 1 Level 2 Level 3 Total fair in EUR million 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 30 June 2021 31 December 2020 Financial Assets Loans and advances to banks 26,198 25,364 2,548 2,165 0 0 7,714 7,763 15,990 15,611 26,252 25,539 Loans and advances to customers 607,777 593,970 19,007 17,486 0 0 17,828 14,595 583,268 576,659 620,103 608,740 Securities at amortised cost 49,467 50,587 0 0 47,444 49,109 2,433 2,550 586 622 50,462 52,281 683,442 669,921 21,555 19,651 47,444 49,109 27,975 24,908 599,844 592,892 696,817 686,560 Financial liabilities Deposits from banks 89,134 78,098 6,306 3,918 0 77,571 68,473 5,870 6,014 89,748 78,405 Customer deposits 620,564 609,517 590,870 580,262 0 17,081 14,007 12,730 15,704 620,682 609,972 Debt securities in issue 91,840 82,065 -0 51,051 51,906 22,879 24,005 18,283 6,449 92,213 82,360 Subordinated loans 14,791 15,805 -0 -0 14,263 15,013 1,167 1,161 15,429 16,174 816,329 785,484 597,176 584,180 65,314 66,919 118,698 107,645 36,883 28,167 818,072 786,911

Capital management (Tables)

Capital management (Tables)	6 Months Ended
	Jun. 30, 2021
Capital management [Abstract]
Main credit ratings	Main credit ratings of ING at 30 June 2021 Standard & Poor’s Moody’s Fitch Rating Outlook Rating Outlook Rating Outlook ING Groep N.V. Long-term A- Stable Baa1 Stable A+ Negative ING Bank N.V. Long-term A+ Stable Aa3 Stable AA- Negative Short-term A-1 P-1 F1+

Risk management (Tables)

Risk management (Tables)	6 Months Ended
	Jun. 30, 2021
Risk management [abstract]
Gross carrying amount per IFRS 9 stage and rating class	Gross carrying amount per IFRS 9 stage in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total 30 June 2021 Rating class Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Investment grade 1 (AAA) 118,799 3 47 0 118,846 3 2-4 (AA) 109,118 4 301 0 109,419 4 5-7 (A) 151,056 17 935 1 151,992 17 8-10 (BBB) 307,902 69 9,591 15 317,493 84 Non-Investment grade 11-13 (BB) 160,025 211 15,436 106 175,461 317 14-16 (B) 28,468 192 19,930 475 48,397 667 17 (CCC) 4,277 9 5,334 291 9,611 301 Substandard grade 18 (CC) 2,888 189 2,888 189 19 (C) 2,293 229 2,293 229 NPL grade 20-22 (D) 12,827 3,616 12,827 3,616 Total 879,645 505 56,755 1,306 12,827 3,616 949,228 5,427 ¹IAS 37 provisions are established for non-credit replacement guarantees not in the scope of IFRS 9. Total 85 Gross carrying amount per IFRS 9 stage in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total 31 December 2020 Rating class Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Gross Carrying Amount Provisions Investment grade 1 (AAA) 109,734 3 46 0 109,780 3 2-4 (AA) 108,776 6 646 0 109,422 6 5-7 (A) 137,901 27 797 1 138,698 28 8-10 (BBB) 294,923 88 7,418 12 302,341 100 Non-Investment grade 11-13 (BB) 159,076 239 18,513 133 177,588 372 14-16 (B) 28,335 208 23,742 570 52,077 777 17 (CCC) 2,817 9 5,113 259 7,930 269 Substandard grade 18 (CC) 3,384 248 3,384 248 19 (C) 2,323 254 2,323 254 NPL grade 20-22 (D) 13,398 3,797 13,398 3,797 Total 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 ¹IAS 37 provisions are established for non-credit replacement guarantees not in the scope of IFRS 9. Total 75
Changes in loan loss provisions and gross carrying amounts	Changes in gross carrying amounts and 1,2,3 in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Opening balance at 1 January 2021 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 Transfer into 13,305 16 -12,830 -202 -475 -19 -204 Transfer into -15,575 -23 16,345 185 -771 -79 83 Transfer into -1,228 -3 -1,208 -64 2,436 426 359 Net remeasurement of loan loss provisions -114 -62 89 -87 New financial assets originated or purchased 77,861 80 77,861 80 Financial assets that have been derecognised -33,762 -31 -5,765 -46 -1,539 -87 -41,066 -163 Net drawdowns and repayments -2,518 -1,768 -222 -4,509 Changes in models/risk parameters 4 16 33 53 Decrease/Increase in loan loss provisions -70 -171 362 121 Write-offs -472 -472 Recoveries of amounts previously written off 21 21 Foreign exchange and other movements -6 1 -92 -97 Closing balance at 30 June 2021 879,645 505 56,755 1,306 12,827 3,616 949,228 5,427 1 At the end of June 2021, the gross carrying amounts included loans and advances to central banks (€ 119.6 26.2 30.6 49.5 613.1 billion), assets held for sale (€ 1.3 126.9 -6.5 -6.1 adjustment hedged items (€ -0.8 -2.2 -2.5 0.1 2 Stage 3 Lifetime credit impaired includes € 3 3 At the end of June 2021, the stock of provisions included provisions for loans and advances to central banks (€ 4 20 12 securities at amortised cost (€ 22 5,347 23 Changes in gross carrying amounts and 1,2,3 in EUR million 12-month ECL (Stage 1) Lifetime ECL not credit impaired (Stage 2) Lifetime ECL credit impaired (Stage 3) Total Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Gross carrying amount Provisions Opening balance at 1 January 2020 817,247 490 41,082 881 10,955 3,275 869,284 4,646 Transfer into 9,139 24 -8,899 -200 -240 -18 0 -194 Transfer into -39,093 -76 39,601 651 -509 -57 0 518 Transfer into -3,592 -30 -1,879 -163 5,471 1,518 0 1,325 Net remeasurement of loan loss provisions 0 109 0 450 0 700 0 1,259 New financial assets originated or purchased 161,333 178 0 0 161,333 178 Financial assets that have been derecognised -116,035 -85 -6,987 -107 -897 -236 -123,919 -428 Net drawdowns and repayments 12,563 -938 -181 11,444 Changes in models/risk parameters 7 7 Increase in loan loss provisions 119 638 1,908 2,666 Write-offs -1,200 -1,200 -1,200 -1,200 Recoveries of amounts previously written off 39 39 Foreign exchange and other movements -28 -42 -226 -297 Closing balance at 31 December 2020 841,562 581 61,981 1,476 13,398 3,797 916,942 5,854 1 At the end of December 2020, the gross carrying amounts included loans and advances to central banks (€ 109.2 25.4 34.0 50.6 (€ 599.7 118.4 -6.4 -8.3 -1.0 billion), a receivable that is offset by a liquidity facility (€ -2.2 -2.2 -0.3 2 Stage 3 Lifetime credit impaired includes € 3 3 At the end of December 2020, the stock of provisions included provisions for loans and advances to central banks (€ 3 23 14 17 customers (€ 5,779 17
Sensitivity Analysis	Sensitivity analysis as at 30 June 2021 2021 2022 2023 Un-weighted ECL (Eur mln) Probability- weighting Reportable ECL (Eur mln) 1 Netherlands Upside scenario Real GDP 3.3 4.5 3.2 341 20 % 382 Unemployment 4.0 4.0 3.2 HPI 11.0 16.3 4.6 Baseline Scenario Real GDP 2.6 3.2 1.9 374 60 % Unemployment 4.8 4.8 4.7 HPI 7.9 2.6 2.5 Downside scenario Real GDP 0.1 0.6 1.0 448 20 % Unemployment 6.1 7.1 7.7 HPI 4.6 -12.6 -0.4 Belgium Real GDP 4.9 4.8 2.6 486 20 % 511 Unemployment 6.4 6.0 5.5 HPI 2.7 2.6 3.5 Baseline Scenario Real GDP 4.2 3.5 2.2 507 60 % Unemployment 7.0 6.4 6.2 HPI 1.9 1.6 2.6 Downside scenario Real GDP 2.6 1.4 1.7 550 20 % Unemployment 8.2 8.5 8.5 HPI 1.1 -0.1 1.7 Germany Upside scenario Real GDP 4.5 5.9 1.9 517 20 % 543 Unemployment 3.3 2.7 2.0 HPI 10.6 6.8 4.0 Baseline Scenario Real GDP 3.3 4.1 1.5 540 60 % Unemployment 4.2 3.8 3.6 HPI 9.4 3.1 0.7 Downside scenario Real GDP 1.3 1.0 0.2 580 20 % Unemployment 5.3 5.4 5.5 HPI 7.9 -1.5 -2.9 United States Upside scenario Real GDP 8.2 5.3 3.0 86 20 % 115 Unemployment 4.3 2.8 2.0 HPI 11.6 8.7 9.9 Baseline Scenario Real GDP 6.6 4.3 2.3 107 60 % Unemployment 4.7 3.8 3.6 HPI 11.1 4.9 4.1 Downside scenario Real GDP 4.4 1.2 0.7 167 20 % Unemployment 6.7 6.7 7.5 HPI 10.2 -0.1 -2.3 1 Sensitivity does only include the effect of time lag overlay, other management adjustments are Sensitivity analysis as at 31 December 2020 2021 2022 2023 Un-weighted ECL (Eur mln) Probability- weighting Reportable ECL (Eur mln) 1 Netherlands Upside scenario Real GDP 5.3 3.3 2.8 383 20 % 468 Unemployment 5.1 3.9 3.0 HPI 8.1 6.3 4.7 Baseline Scenario Real GDP 2.8 2.9 1.9 441 60 % Unemployment 5.8 5.2 4.7 HPI -1.9 -1.6 4.5 Downside scenario Real GDP -4.9 4.8 1.4 636 20 % Unemployment 7.7 7.8 7.9 HPI -12.3 -11.0 4.3 Belgium Real GDP 6.9 3.3 2.4 494 20 % 559 Unemployment 7.3 6.2 5.8 HPI -0.2 4.2 4.8 Baseline Scenario Real GDP 4.5 3.3 2.3 540 60 % Unemployment 7.5 6.3 6.3 HPI -1.7 3.5 3.8 Downside scenario Real GDP -0.4 4.0 2.2 681 20 % Unemployment 9.4 9.1 8.8 HPI -3.6 2.5 2.9 Germany Upside scenario Real GDP 7.6 3.3 1.5 504 20 % 558 Unemployment 3.0 2.2 1.8 HPI 3.5 8.3 6.6 Baseline Scenario Real GDP 3.9 3.4 1.6 541 60 % Unemployment 4.1 3.5 3.5 HPI 0.4 4.8 3.1 Downside scenario Real GDP -2.4 3.5 1.3 662 20 % Unemployment 5.6 5.3 5.6 HPI -3.5 0.8 -0.9 United States Upside scenario Real GDP 5.6 4.1 3.8 93 20 % 189 Unemployment 5.0 3.0 1.9 HPI 6.2 9.4 9.3 Baseline Scenario Real GDP 4.0 3.2 2.5 134 60 % Unemployment 6.0 4.7 4.1 HPI 4.3 4.1 4.0 Downside scenario Real GDP -6.3 6.8 1.9 448 20 % Unemployment 8.5 7.9 7.6 HPI 1.2 -1.9 -2.3 1 Sensitivity does only include the effect of time lag overlay, other management adjustments are
Non-derivative financial instruments to transition to alternative benchmarks	Non derivative Financial instruments 30 June 2021 in EUR million Financial Assets non- derivative Financial Liabilities derivative Off balance sheet commitments Carrying value (in EUR mln) Carrying value (in EUR mln) Nominal value (in EUR mln) By benchmark rate GBP LIBOR 6,825 424 3,798 USD LIBOR 33,703 1,459 12,445 CHF LIBOR 243 50 404 JPY LIBOR 225 33 136 EUR LIBOR 200 2,808 EONIA 344 39 Total 41,196 2,310 19,630 Non derivative Financial instruments 31 December 2020 in EUR million Financial Assets non- derivative Financial Liabilities derivative Off balance sheet commitments Carrying value (in EUR mln) Carrying value (in EUR mln) Nominal value (in EUR mln) By benchmark rate GBP LIBOR 6,912 259 3,732 USD LIBOR 30,959 3,796 9,376 CHF LIBOR 345 42 321 JPY LIBOR 225 41 79 EUR LIBOR 422 8 2,564 EONIA 100 728 39 Total 38,963 4,873 16,111
Derivative financial instruments to transition to alternative benchmarks	Derivative Financial instruments 30 June 2021 31 December 2020 in EUR million Nominal value (in EUR mln) Nominal value By benchmark rate 1 GBP LIBOR 31,045 27,031 USD LIBOR 369,056 355,066 CHF LIBOR 12,308 9,710 JPY LIBOR 92,874 87,057 EONIA 32,730 29,593 Total 538,013 508,457 1 For cross currency swaps all legs of the swap are included that are linked to a main IBOR that is significant to ING Group.

Basis of preparation and acco_4

Basis of preparation and accounting policies - Reconciliation net result under IFRS-EU and IFRS-IASB (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure Of Reconciliation Net Result Eu Ifrs And Iasb Ifrs [abstract]
In accordance with IFRS-EU (attributable to shareholders of parent)	€ 2,464	€ 969
Adjustment of the EU IAS 39 carve-out	956	(493)
Tax effect of the adjustment	(260)	115
Effect of adjustment after tax	697	(379)
In accordance with IFRS-IASB (attributable to the shareholders of the parent)	3,161	591
Non-controlling interests	59	36
In accordance with IFRS-IASB Total net result	€ 3,219	€ 626

Basis of preparation and acco_5

Basis of preparation and accounting policies - Reconciliation shareholders' equity under IFRS-EU and IFRS-IASB (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure of reconciliation shareholder equity eu ifrs and iasb ifrs [abstract]
In accordance with IFRS-EU (attributable to shareholders of parent)	€ 56,222	€ 54,637
Adjustment of the EU IAS 39 carve-out	(3,132)	(4,081)
Tax effect of the adjustment	805	1,063
Effect of adjustment after tax	(2,327)	(3,018)
Shareholders' equity	53,896	51,619
Non-controlling interests	987	1,022
In accordance with IFRS-IASB Total Equity	€ 54,883	€ 52,640	€ 52,171	€ 51,889

Basis of preparation and acco_6

Basis of preparation and accounting policies - Additional information (Details) NumberOfCustomers in Thousands, € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021EUR (€)NumberOfCustomersCountry	Jun. 30, 2020EUR (€)	Jun. 23, 2021	Dec. 31, 2020EUR (€)NumberOfCustomers	Nov. 30, 2020EUR (€)
Disclosure of significant accounting policies [line items]
Name of reporting entity	ING Groep N.V.
Domicile of entity	Amsterdam, the Netherlands
Borrowings	€ 17,500			€ 19,400
Covid loan	€ 2,000			€ 1,500	€ 800
Number of customers that have been granted payment holidays | NumberOfCustomers	159			196
Percentage expired				96.00%
Adjustment of the EU IAS 39 carve-out	€ 956	€ (493)
COVID 19, management adjustment	595
COVID 19, payment holidays and other government support measures	260
COVID 19, time lag in defaults materialising	296
COVID 19, structured acquisition portfolio	39
Increase (decrease) in COVID 19 adjustment	€ (68)
Minimum [member]
Disclosure of significant accounting policies [line items]
Number of countries in which entity operates | Country	40
Minimum [member] | TLTRO III [Member]
Disclosure of significant accounting policies [line items]
Change in interest in basis points			(1.00%)
Maximum [member] | TLTRO III [Member]
Disclosure of significant accounting policies [line items]
Change in interest in basis points			(0.50%)

Financial assets at fair valu_5

Financial assets at fair value through profit or loss - Summary of financial assets at fair value through profit or loss (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Financial assets at fair value through profit or loss [abstract]
Trading assets	€ 50,652	€ 51,356
Non-trading derivatives	2,112	3,583
Designated at fair value through profit or loss	5,421	4,126
Mandatorily measured at fair value through profit or loss	63,217	44,305
Financial assets at fair value through profit or loss	€ 121,402	€ 103,370

Financial assets at fair valu_6

Financial assets at fair value through profit or loss - Summary of exposure to (reverse) repurchase agreements (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	€ 121,402	€ 103,370
Financial liabilities at fair value through profit or loss	87,141	82,781
Reverse repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	74,526	58,175
Repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial liabilities at fair value through profit or loss	62,781	48,935
Deposits from banks [member] | Repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial liabilities at fair value through profit or loss	4,666	1,971
Trading liabilities, funds on deposits [member] | Repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial liabilities at fair value through profit or loss	6,658	5,787
Funds entrusted measured at designated at fair value through profit or loss [member] | Repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial liabilities at fair value through profit or loss	51,457	41,177
Loans and advances to banks [member] | Reverse repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	4,463	4,869
Loans And Advances To Customers [Member] | Reverse repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	1	624
Trading assets, loans and receivables [member] | Reverse repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	9,939	10,947
Loans and receivables measured mandatorily at fair value through profit or loss [member] | Reverse repurchase transactions [member]
Disclosure of fair value measurement of assets [line items]
Financial assets at fair value through profit or loss	€ 60,124	€ 41,735

Financial assets at fair valu_7

Financial assets at fair value through other comprehensive income - Summary of financial assets at fair value through other comprehensive income (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	€ 33,016	€ 35,895
Loan loss on provisions	5,347	5,779
Equity securities [member]
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	2,434	1,862
Debt Securities [member]
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	29,693	32,977
Loan loss on provisions	12	12
Loans and advances [member]
Disclosure Of Financial Assets [Line Items]
Financial assets at fair value through other comprehensive income	889	1,056
Loan loss on provisions	€ 1	€ 2

Financial assets at fair valu_8

Financial assets at fair value through other comprehensive income- Summary of equity securities designated as at fair value through other comprehensive income (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	€ 2,434		€ 1,862
Dividend income	15	€ 2
Investment in Bank of Beijing [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	1,748		1,662
Other Investments [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Carrying value	686		€ 200
Dividend income	€ 15	€ 2

Financial assets at fair valu_9

Financial assets at fair value through other comprehensive income - Summary of changes in fair value through other comprehensive income financial assets (Details) - Financial Assets At Fair Value Through Other Comprehensive Income Category [Member] - EUR (€) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure Of Financial Assets [Line Items]
Financial assets	€ 35,895	€ 34,468	€ 34,468
Additions	9,381	16,949
Amortisation	(7)	(9)
Transfers and reclassifications	(16)	(107)
Changes in unrealised revaluations	(685)	237
Impairments	(1)	(2)
Reversals of impairments	1	(4)
Disposals and redemptions	(11,802)	(14,571)
Exchange rate differences	247	(1,070)
Changes in the composition of the group and other changes	2	2
Financial assets	33,016		35,895
Equity securities [member]
Disclosure Of Financial Assets [Line Items]
Financial assets	1,862	2,306	2,306
Additions	504	13
Transfers and reclassifications	(16)	(107)
Changes in unrealised revaluations	9	(283)
Disposals and redemptions	(1)	(13)
Exchange rate differences	76	(53)
Changes in the composition of the group and other changes	0	0
Financial assets	2,434		1,862
Debt instruments [member]
Disclosure Of Financial Assets [Line Items]
Financial assets	34,033	32,163	32,163
Additions	8,877	16,936
Amortisation	(7)	(9)
Changes in unrealised revaluations	(694)	520
Impairments	(1)	(2)
Reversals of impairments	1	(4)
Disposals and redemptions	(11,800)	(14,557)
Exchange rate differences	171	(1,017)
Changes in the composition of the group and other changes	2	€ 2
Financial assets	€ 30,582		€ 34,033

Financial assets at fair val_10

Financial assets at fair value through other comprehensive income - Additional information (Details) - EUR (€)	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Securities [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Unrealized Change in securities	€ (694,000,000)		€ 520,000,000
Investment in Bank of Beijing [member]
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]
Ownership interest held in equity based investments	13.00%	13.00%
Minimum percentage of equity ownership required to supply additional capital	5.00%
Decrease in revaluations of equity securities			339,000,000
Requests for capital	€ 0

Loans and advances to custome_3

Loans and advances to customers - Summary of loans and advances to customers (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	€ 613,123	€ 599,749
Loan loss provisions	(5,347)	(5,779)
Loans and advances to customers	607,777	593,970
Loans to, or guaranteed by, public authorities [member]
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	41,936	41,502
Loans secured by mortgages [member]
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	356,786	352,130
Loans guaranteed by credit institutions [Member]
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	5,810	5,201
Personal lending [Member]
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	27,138	27,794
Corporate loans [member]
Disclosure of detailed information about financial instruments [line items]
Loans and advances to customers before provisions	€ 181,453	€ 173,121

Investment in associates and _3

Investment in associates and joint ventures - Summary of investments in associates and joint ventures (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balance sheet value	€ 1,461	€ 1,475
Total assets	975,650	933,891
Total liabilities	€ 920,767	€ 881,250
TTB [member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Interest held	23.00%	23.00%
Fair value of listed investment	€ 652	€ 653
Balance sheet value	1,166	1,202
Total assets	47,077	50,123
Total liabilities	41,631	44,597
Total income	442	1,388
Total expenses	352	1,093
Other investments in associates and joint ventures [member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Balance sheet value	€ 295	€ 273

Investment in associates and _4

Investment in associates and joint ventures - Summary of changes in investments in associates and joint ventures (Details) - EUR (€) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Opening balance	€ 1,475
Share of results	20	€ 34
Closing balance	1,461		€ 1,475
Associates and joint ventures [member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Opening balance	1,475	€ 1,790	1,790
Additions	31		24
Revaluations	4		(3)
Share of results	23		66
Dividends received	(31)		(12)
Disposals	(6)		(12)
Impairments	(3)		(235)
Exchange rate differences	(45)		(144)
Other	13		0
Closing balance	€ 1,461		€ 1,475

Investment in associates and _5

Investment in associates and joint ventures - Additional information (Details) - EUR (€)	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Share of result from associates and joint ventures	€ 20,000,000	€ 34,000,000
TTB [member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Proportion of ownership interest in associate	23.00%		23.00%
Impairment losses	€ 0
Share of result from associates and joint ventures	€ 32,000,000		€ 70,000,000
Terminal growth rate	2.15%		1.60%
Discount rate (cost of equity)	9.36%		8.49%
Decrease (change) in long term growth rate	5.25%
Change in discount rate	1.43%
Decrease in forecasted cash flow projections that would reduce recoverable amount to carrying amount	15.40%
Associates and joint ventures [member]
Disclosure of Investments in Associates and Joint Ventures [Line Items]
Share of result from associates and joint ventures	€ 23,000,000		€ 66,000,000

Assets held for sale - Addition

Assets held for sale - Additional information (Details) € in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2021EUR (€)	Jun. 30, 2021EUR (€)
Assets held for sale [Line Items]
Assets held for sale	€ 1,278	€ 1,278
Liabilities held for sale	2,243	2,243
Customer deposits [Member]
Assets held for sale [Line Items]
Liabilities held for sale	2,243	2,243
Customer lending [Member]
Assets held for sale [Line Items]
Assets held for sale	1,273	1,273
Mortgages [member]
Assets held for sale [Line Items]
Assets held for sale	877	877
Other personal lending [Member]
Assets held for sale [Line Items]
Assets held for sale	396	396
Non-financial [Member]
Assets held for sale [Line Items]
Assets held for sale	5	5
Government bonds [member]
Assets held for sale [Line Items]
Assets transferred or sold in disposal	€ 500
Savings accounts [Member]
Assets held for sale [Line Items]
Assets transferred or sold in disposal		€ 2,100

Deposits from banks - Schedule

Deposits from banks - Schedule of deposits from banks by type (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Of Deposits From Bank [Line Items]
Non-interest bearing	€ 784	€ 792
Interest bearing	88,350	77,306
Deposits from banks	€ 89,134	€ 78,098

Deposits from banks - Additiona

Deposits from banks - Additional information (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Disclosure Of Deposits From Bank [Line Items]
Deposits from banks	€ 89,134		€ 78,098
TLTRO [Member]
Disclosure Of Deposits From Bank [Line Items]
Deposits from banks	€ 65,500		€ 59,500
TLTRO III [Member]
Disclosure Of Deposits From Bank [Line Items]
Deposits from banks		€ 6,000
Repayment period	3 years
Early repayment waiting period	1 year
Growth in lending volumes at least 0% [member] | Maximum [member] | Deposit Facility Rate [Member]
Disclosure Of Deposits From Bank [Line Items]
Borrowings, interest rate	(1.00%)
Spread on variable interest rate	0.50%
Not meeting volume growth criteria [member] | Maximum [member] | Main Refinancing Operations Rate [Member]
Disclosure Of Deposits From Bank [Line Items]
Spread on variable interest rate	0.50%

Financial liabilities at fair_3

Financial liabilities at fair value through profit or loss - Summary of financial liabilities at fair value through profit or loss (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure of fair value measurement of liabilities [abstract]
Trading liabilities	€ 26,845	€ 32,709
Non-trading derivatives	1,925	1,629
Designated at fair value through profit or loss	58,370	48,444
Financial liabilities	€ 87,141	€ 82,781

Debt securities in issue - Chan

Debt securities in issue - Changes in debt securities in issue (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Debt securities in issue [Abstract]
Opening balance	€ 82,065	€ 118,528
Additions	42,208	65,308
Redemptions / Disposals	(32,233)	(99,212)
Exchange rate differences	955	(3,403)
Other movements	(1,156)	844
Closing balance	€ 91,840	€ 82,065

Debt securities in issue - Addi

Debt securities in issue - Additional information (Details) € in Billions	6 Months Ended
	Jun. 30, 2021EUR (€)
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	€ 9.8
Commercial paper [member]
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	9.4
Matured long term bonds [member]
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	(0.6)
Certificates of deposits [Member]
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	3.1
Matured Covered Bonds [member]
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	(1)
Other debt securities [member]
Disclosure of financial liabilities [line items]
Increase (decrease) in debt securities	€ (1.1)

Subordinated loans - Schedule o

Subordinated loans - Schedule of subordinated loans by group companies (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Subordinated loans	€ 14,791	€ 15,805	€ 16,588
ING Groep N.V. [member]
Disclosure of detailed information about borrowings [line items]
Subordinated loans	13,795	13,150
ING Group Companies [member]
Disclosure of detailed information about borrowings [line items]
Subordinated loans	€ 996	€ 2,654

Subordinated loans - Schedule_2

Subordinated loans - Schedule of changes in subordinated loans (Details) - EUR (€) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Subordinated loans [abstract]
Opening balance	€ 15,805	€ 16,588	€ 16,588
New issuances	491	2,165	2,165
Repayments	(1,455)	€ (2,608)	(2,786)
Exchange rate differences and other	(49)		(163)
Closing balance	€ 14,791		€ 15,805

Subordinated loans - Additional

Subordinated loans - Additional information (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Subordinated liabilities	€ 14,791		€ 15,805	€ 16,588
Redemption of subordinated loans	€ 32,233	€ 46,335
Subordinated Tier 2 Notes [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate	3.625%
Redemption of subordinated loans	€ 1,500
Fixed rate subordinated tier 2 green notes [Member]
Disclosure of detailed information about borrowings [line items]
Subordinated liabilities	€ 500
Borrowings, interest rate	0.875%

Equity - Summary of equity (Det

Equity - Summary of equity (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure Of Financial Assets [Line Items]
Share capital	€ 39	€ 39
Share premium	17,105	17,089
Total share capital and share premium	17,144	17,128
Revaluation reserve: Cash flow hedge	873	1,450
Revaluation reserves: Credit liability	(100)	(117)
Revaluation reserve: Property in own use	215	221
Net defined benefit asset/liability remeasurement reserve	(278)	(307)
Currency translation reserve	(3,485)	(3,636)
Share of associates and joint ventures and other reserves	3,209	3,246
Treasury shares	(8)	(4)
Total other reserves	1,870	2,342
Retained earnings	34,882	32,149
Shareholders' equity (parent)	53,896	51,619
Non-controlling interests	987	1,022
Equity	54,883	52,640	€ 52,171	€ 51,889
Debt Securities [member]
Disclosure Of Financial Assets [Line Items]
Revaluation reserves: financial assets	173	309
Equity securities [member]
Disclosure Of Financial Assets [Line Items]
Revaluation reserves: financial assets	€ 1,270	€ 1,181

Equity - Additional information

Equity - Additional information (Details) - EUR (€) € / shares in Units, € in Millions	1 Months Ended	6 Months Ended
	Feb. 28, 2021	Jun. 30, 2021	Jun. 30, 2020
Disclosure of equity [Line Items]
Net decrease in currency translation reserve		€ 151
Cash dividend paid		472	€ 3
TRY [member]
Disclosure of equity [Line Items]
Net decrease in currency translation reserve		(136)
USD [member]
Disclosure of equity [Line Items]
Net decrease in currency translation reserve		208
GBP [member]
Disclosure of equity [Line Items]
Net decrease in currency translation reserve		63
Reserve of cash flow hedges [member]
Disclosure of equity [Line Items]
Changes in unrealised revaluations		577	€ 242
Retained earnings [Member]
Disclosure of equity [Line Items]
Cash dividend paid	€ 468	€ 468
Dividend per ordinary share paid	€ 0.12
Dividends paid as percentage of adjusted net profits	15.00%

Net interest income - Summary o

Net interest income - Summary of net interest income (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Net Interest Income [Abstract]
Interest income on loans	€ 6,999	€ 8,333
Interest income on financial assets at fair value through OCI	189	283
Interest income on debt securities at amortised cost	223	263
Interest income on non-trading derivatives (hedge accounting)	1,131	1,769
Negative interest on liabilities	770	288
Total interest income using effective interest rate method	9,313	10,935
Interest income on financial assets at fair value through profit or loss	220	450
Interest income on non-trading derivatives (no hedge accounting)	1,140	556
Interest income other	8	21
Total other interest income	1,368	1,026
Total interest income	10,680	11,962
Interest expense on deposits from banks	71	113
Interest expense on customer deposits	479	823
Interest expense on debt securities in issue	621	1,005
Interest expense on subordinated loans	271	323
Negative interest on assets	276	117
Interest expense on non-trading derivatives (hedge accounting)	817	1,779
Total interest expense using effective interest rate method	2,534	4,160
Interest expense on financial liabilities at fair value through profit or loss	158	348
Interest expense on non-trading derivatives (no hedge accounting)	934	540
Interest expense on lease liabilities	7	11
Interest expense other	26	25
Total other interest expense	1,125	925
Total interest expense	3,659	5,085
Net interest income	€ 7,021	€ 6,877

Net interest income - Additiona

Net interest income - Additional information (Details) - EUR (€) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 23, 2021	Dec. 31, 2020
Net Interest Income Disclosure [Line Items]
Net interest income	€ 7,021	€ 6,877
Negative interest on liabilities	770	€ 288
TLTRO III [Member]
Net Interest Income Disclosure [Line Items]
Interest income on loans and receivables	€ 309			€ 158
Interest income unconditional				€ 158
TLTRO III [Member] | Top of range [member]
Net Interest Income Disclosure [Line Items]
Change in interest in basis points			(0.50%)
TLTRO III [Member] | Bottom of range [member]
Net Interest Income Disclosure [Line Items]
Change in interest in basis points			(1.00%)

Net fee and commission income -

Net fee and commission income - Schedule of fee and commission income (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fee and commission income (expense) [abstract]
Funds transfer	€ 727	€ 686
Securities business	487	439
Insurance broking	117	101
Asset management fees	146	115
Brokerage and advisory fees	374	321
Other	588	644
Total Fee and commission income	€ 2,439	€ 2,307

Net fee and commission income_2

Net fee and commission income - Schedule of fee and commission expense (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fee and commission expense [abstract]
Funds transfer	€ 259	€ 301
Securities business	84	80
Insurance broking	1	0
Asset management fees	5	3
Brokerage and advisory fees	185	157
Other	195	260
Total fee and commission expenses	€ 729	€ 801

Net fee and commission income_3

Net fee and commission income - Additional information (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Fee and commission income (expense) [abstract]
Bank guarantees fee and commission income	€ 90	€ 98
Underwriting syndication loans fee and commission income	11	10
Structured finance fee and commission income	37	42
Collective instruments distribution fee and commission income	€ 92	€ 112

Other income - Additional infor

Other income - Additional information (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Other income [abstract]
Other income	€ 184	€ 269
Receivable related to the insolvency of a financial institution	72
Other income from sale of certain securities at amortised cost		186
Income from positive recovery of defaulted receivables	16	18
Share of result from associates and joint ventures	€ 20	€ 34

Other income - Summary of Other

Other income - Summary of Other Income (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure Of Analysis Of Other Comprehensive Income By Item [Abstract]
Share of result from associates and joint ventures	€ 20	€ 34
Net result derecognition of financial assets measured at amortised cost	(3)	187
Other	166	48
Other income	€ 184	€ 269

Other operating expenses - Summ

Other operating expenses - Summary of other operating expenses (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Summary of Other Operating Expenses [abstract]
Regulatory costs	€ 759	€ 663
Audit and non-audit services	16	14
IT related expenses	387	388
Advertising and public relations	149	166
External advisory fees	147	186
Office expenses	141	163
Travel and accommodation expenses	24	43
Contributions and subscriptions	59	56
Postal charges	20	21
Depreciation of property and equipment	285	281
Amortisation of intangible assets	133	121
Impairments and reversals on property and equipment and intangibles	(23)	(333)
Addition/(unused amounts reversed) of provision for reorganisations and relocations	88	(2)
Addition/(unused amounts reversed) of other provisions	49	(14)
Other	341	284
Other operating expense	€ 2,621	€ 2,703

Other operating expenses - Addi

Other operating expenses - Additional information (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure of other operating expenses [line items]
Contributions to the Single Resolution Fund	€ 308	€ 277
Increase in local bank taxes	8
Local bank taxes		191	€ 183
Goodwill [member]
Disclosure of other operating expenses [line items]
Impairment of an intangible asset		310
Netherlands, Germany, Belgium, Poland, and Spain [Member]
Disclosure of other operating expenses [line items]
Contributions to the Deposit Guarantee Schemes	€ 260	€ 203

Earnings per ordinary share - S

Earnings per ordinary share - Summary of earnings per ordinary share (Details) - EUR (€) € / shares in Units, € in Millions, shares in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Amount
Basic earnings	€ 3,161	€ 591
Basic earnings from continuing operations, amount	3,161	591
Diluted earnings, amount	3,161	591
Diluted earnings from continuing operations, amount	€ 3,161	€ 591
Weighted average number of ordinary shares outstanding during the period
Basic earnings	3,901.9	3,897.9
Stock option and share plans	1.6	0.5
Total effect of dilutive instruments	1.6	0.5
Diluted earnings	3,903.5	3,898.5
Per ordinary share
Basic earnings	€ 0.81	€ 0.15
Basic earnings from continuing operations	0.81	0.15
Diluted earnings	0.81	0.15
Diluted earnings from continuing operations	€ 0.81	€ 0.15

Segments - Summary of reconcili

Segments - Summary of reconciliation between IFRS and underlying income, expenses and net result (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure of operating segments [line items]
Taxation	€ 1,265	€ 438
Non-controlling interests	59	36
Basic earnings	3,161	591
Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Income	(956)	493
Taxation	(260)	115
Basic earnings	(697)	379
Results IFRS-EU [member]
Disclosure of operating segments [line items]
Income	9,219	9,182
Expenses	5,691	7,623
Taxation	1,005	553
Non-controlling interests	59	36
Basic earnings	2,464	969
Net Result IFRS Attributable to Equity Holder of Parent
Disclosure of operating segments [line items]
Income	10,175	8,688
Expenses	5,691	7,623
Taxation	1,265	438
Non-controlling interests	59	36
Basic earnings	€ 3,161	€ 591

Segments - Schedule of ING Grou

Segments - Schedule of ING Group total (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure of operating segments [line items]
- Net interest income	€ 7,021	€ 6,877
- Net fee and commission income	1,710	1,506
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	4,484	1,065
Taxation	1,265	438
Non-controlling interests	59	36
Net result	3,161	591
Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Total income	(956)	493
Taxation	(260)	115
Net result	(697)	379
Results IFRS-EU [member]
Disclosure of operating segments [line items]
Total income	9,219	9,182
- Operating expenses	5,691	7,623
Taxation	1,005	553
Non-controlling interests	59	36
Net result	2,464	969
ING Group [member]
Disclosure of operating segments [line items]
Net result	3,161	591
ING Group [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Net result	697	(379)
ING Group [member] | Results IFRS-EU [member]
Disclosure of operating segments [line items]
- Net interest income	6,853	6,931
- Net fee and commission income	1,710	1,506
- Total investment and other income	656	745
Total income	9,219	9,182
- Operating expenses	5,560	5,626
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	3,528	1,558
Taxation	1,005	553
Non-controlling interests	59	36
Net result	2,464	969
ING Group [member] | ING Bank N.V. [member]
Disclosure of operating segments [line items]
Net result	3,163	642
ING Group [member] | ING Bank N.V. [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Net result	697	(379)
ING Group [member] | ING Bank N.V. [member] | Results IFRS-EU [member]
Disclosure of operating segments [line items]
- Net interest income	6,852	6,931
- Net fee and commission income	1,710	1,507
- Total investment and other income	653	760
Total income	9,215	9,198
- Operating expenses	5,553	5,625
- Additions to loan loss provision	131	1,997
Total expenses	5,685	7,623
Result before taxation	3,530	1,575
Taxation	1,005	519
Non-controlling interests	59	36
Net result	2,467	1,021
ING Group [member] | Other banking [member]
Disclosure of operating segments [line items]
Net result	(2)	(51)
ING Group [member] | Other banking [member] | Results IFRS-EU [member]
Disclosure of operating segments [line items]
- Net interest income	0	0
- Net fee and commission income	0	(1)
- Total investment and other income	4	(16)
Total income	4	(16)
- Operating expenses	6	1
- Additions to loan loss provision	0	0
Total expenses	6	1
Result before taxation	(2)	(17)
Taxation	0	34
Non-controlling interests	0
Net result	€ (2)	€ (51)

Segments - Summary of segments

Segments - Summary of segments banking by line of business (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure of operating segments [line items]
- Net interest income	€ 7,021	€ 6,877
- Net fee and commission income	1,710	1,506
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	4,484	1,065
Taxation	1,265	438
Non-controlling interests	59	36
Basic earnings	3,161	591
Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Total income	(956)	493
Taxation	(260)	115
Basic earnings	(697)	379
Results IFRS-EU [member]
Disclosure of operating segments [line items]
Total income	9,219	9,182
- Operating expenses	5,691	7,623
Taxation	1,005	553
Non-controlling interests	59	36
Basic earnings	2,464	969
Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	3,161	591
Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	6,853	6,931
- Net fee and commission income	1,710	1,506
- Total investment and other income	656	745
Total income	9,219	9,182
- Operating expenses	5,560	5,626
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	3,528	1,558
Taxation	1,005	553
Non-controlling interests	59	36
Basic earnings	2,464	969
Segments Banking Activities [Member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	697	(379)
Retail Netherlands [member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	754	781
Retail Netherlands [member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	1,651	1,763
- Net fee and commission income	368	332
- Total investment and other income	119	175
Total income	2,138	2,269
- Operating expenses	1,181	1,088
- Additions to loan loss provision	(65)	139
Total expenses	1,116	1,227
Result before taxation	1,022	1,043
Taxation	267	262
Non-controlling interests		(1)
Basic earnings	754	781
Retail Belgium [member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	94	(44)
Retail Belgium [member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	894	937
- Net fee and commission income	248	207
- Total investment and other income	99	71
Total income	1,241	1,215
- Operating expenses	912	969
- Additions to loan loss provision	194	282
Total expenses	1,107	1,251
Result before taxation	134	(36)
Taxation	41	9
Non-controlling interests	0	0
Basic earnings	94	(44)
Retail Germany [member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	275	304
Retail Germany [member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	734	801
- Net fee and commission income	257	215
- Total investment and other income	45	59
Total income	1,036	1,075
- Operating expenses	604	567
- Additions to loan loss provision	19	14
Total expenses	623	581
Result before taxation	413	494
Taxation	135	188
Non-controlling interests	2	2
Basic earnings	275	304
Retail Other [member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	291	183
Retail Other [member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	1,354	1,392
- Net fee and commission income	253	193
- Total investment and other income	122	134
Total income	1,729	1,720
- Operating expenses	1,174	1,120
- Additions to loan loss provision	102	304
Total expenses	1,276	1,424
Result before taxation	454	295
Taxation	117	85
Non-controlling interests	46	27
Basic earnings	291	183
Wholesale Banking [Member]
Disclosure of operating segments [line items]
Result before taxation	1,558	(204)
Wholesale Banking [Member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	1,889	(614)
Wholesale Banking [Member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	2,044	1,864
- Net fee and commission income	580	561
- Total investment and other income	267	354
Total income	2,891	2,780
- Operating expenses	1,452	1,728
- Additions to loan loss provision	(119)	1,256
Total expenses	1,333	2,984
Result before taxation	1,558	(204)
Taxation	355	23
Non-controlling interests	10	8
Basic earnings	1,192	(235)
Wholesale Banking [Member] | Segments Banking Activities [Member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	697	(379)
Corporate Line Banking [member]
Disclosure of operating segments [line items]
Result before taxation	(53)	(34)
Corporate Line Banking [member] | Segments Banking Activities [Member]
Disclosure of operating segments [line items]
Basic earnings	(142)	(19)
Corporate Line Banking [member] | Segments Banking Activities [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	174	173
- Net fee and commission income	4	(2)
- Total investment and other income	5	(48)
Total income	184	123
- Operating expenses	237	154
- Additions to loan loss provision	0	3
Total expenses	237	156
Result before taxation	(53)	(34)
Taxation	89	(14)
Non-controlling interests	0	0
Basic earnings	€ (142)	€ (19)

Segments - Summary of geographi

Segments - Summary of geographical segments banking (Details) - EUR (€) € in Millions	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Disclosure of operating segments [line items]
- Net interest income	€ 7,021	€ 6,877
- Net fee and commission income	1,710	1,506
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	4,484	1,065
Taxation	1,265	438
Non-controlling interests	59	36
Basic earnings	3,161	591
Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Total income	(956)	493
Taxation	(260)	115
Basic earnings	(697)	379
Geographical Segments Banking [Member]
Disclosure of operating segments [line items]
Result before taxation	3,528	1,558
Basic earnings	3,161	591
Geographical Segments Banking [Member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	6,853	6,931
- Net fee and commission income	1,710	1,506
- Total investment and other income	656	745
Total income	9,219	9,182
- Operating expenses	5,560	5,626
- Additions to loan loss provision	131	1,998
Total expenses	5,691	7,623
Result before taxation	3,528	1,558
Taxation	1,005	553
Non-controlling interests	59	36
Basic earnings	2,464	969
Geographical Segments Banking [Member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	697	(379)
Geographical Segments Banking [Member] | Netherlands [member]
Disclosure of operating segments [line items]
Result before taxation	1,162	732
Basic earnings	1,341	143
Geographical Segments Banking [Member] | Netherlands [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	2,023	2,097
- Net fee and commission income	518	494
- Total investment and other income	148	197
Total income	2,688	2,788
- Operating expenses	1,577	1,736
- Additions to loan loss provision	(51)	320
Total expenses	1,526	2,056
Result before taxation	1,162	732
Taxation	298	252
Non-controlling interests		(1)
Basic earnings	864	481
Geographical Segments Banking [Member] | Netherlands [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	477	(338)
Geographical Segments Banking [Member] | Belgium [member]
Disclosure of operating segments [line items]
Result before taxation	349	26
Basic earnings	292	5
Geographical Segments Banking [Member] | Belgium [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	1,072	1,090
- Net fee and commission income	356	302
- Total investment and other income	127	98
Total income	1,554	1,491
- Operating expenses	1,065	1,126
- Additions to loan loss provision	139	338
Total expenses	1,205	1,465
Result before taxation	349	26
Taxation	92	25
Non-controlling interests	0	0
Basic earnings	257	2
Geographical Segments Banking [Member] | Belgium [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	35	3
Geographical Segments Banking [Member] | Germany [member]
Disclosure of operating segments [line items]
Result before taxation	616	474
Basic earnings	613	205
Geographical Segments Banking [Member] | Germany [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	1,010	1,059
- Net fee and commission income	263	228
- Total investment and other income	78	80
Total income	1,350	1,367
- Operating expenses	691	652
- Additions to loan loss provision	43	241
Total expenses	734	893
Result before taxation	616	474
Taxation	186	170
Non-controlling interests	2	2
Basic earnings	428	302
Geographical Segments Banking [Member] | Germany [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	185	(97)
Geographical Segments Banking [Member] | Other Challengers [member]
Disclosure of operating segments [line items]
Result before taxation	400	162
Basic earnings	279	159
Geographical Segments Banking [Member] | Other Challengers [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	974	893
- Net fee and commission income	161	136
- Total investment and other income	45	14
Total income	1,179	1,043
- Operating expenses	724	669
- Additions to loan loss provision	55	212
Total expenses	779	882
Result before taxation	400	162
Taxation	121	56
Basic earnings	279	106
Geographical Segments Banking [Member] | Other Challengers [member] | Adjustment of the EU IAS 39 carve out [Member]
Disclosure of operating segments [line items]
Basic earnings	(1)	53
Geographical Segments Banking [Member] | Growth Markets [member]
Disclosure of operating segments [line items]
Result before taxation	384	284
Basic earnings	245	178
Geographical Segments Banking [Member] | Growth Markets [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	749	799
- Net fee and commission income	163	131
- Total investment and other income	154	203
Total income	1,066	1,133
- Operating expenses	636	644
- Additions to loan loss provision	45	205
Total expenses	681	849
Result before taxation	384	284
Taxation	83	71
Non-controlling interests	57	35
Basic earnings	245	178
Geographical Segments Banking [Member] | Wholesale Banking Rest Of World [member]
Disclosure of operating segments [line items]
Result before taxation	669	(85)
Basic earnings	531	(74)
Geographical Segments Banking [Member] | Wholesale Banking Rest Of World [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	850	823
- Net fee and commission income	246	217
- Total investment and other income	101	197
Total income	1,197	1,237
- Operating expenses	629	644
- Additions to loan loss provision	(101)	678
Total expenses	529	1,322
Result before taxation	669	(85)
Taxation	137	(10)
Basic earnings	531	(74)
Geographical Segments Banking [Member] | Other [member]
Disclosure of operating segments [line items]
Result before taxation	(53)	(35)
Basic earnings	(140)	(25)
Geographical Segments Banking [Member] | Other [member] | Net Results IFRS-EU [Member]
Disclosure of operating segments [line items]
- Net interest income	175	169
- Net fee and commission income	4	(3)
- Total investment and other income	5	(44)
Total income	184	123
- Operating expenses	237	155
- Additions to loan loss provision	0	3
Total expenses	237	158
Result before taxation	(53)	(35)
Taxation	87	(10)
Non-controlling interests	0	0
Basic earnings	(140)	(25)
Retail [member]
Disclosure of operating segments [line items]
Result before taxation	2,023	1,796
Retail [member] | Netherlands [member]
Disclosure of operating segments [line items]
Result before taxation	1,022	1,043
Retail [member] | Belgium [member]
Disclosure of operating segments [line items]
Result before taxation	134	(36)
Retail [member] | Germany [member]
Disclosure of operating segments [line items]
Result before taxation	413	494
Retail [member] | Other Challengers [member]
Disclosure of operating segments [line items]
Result before taxation	160	74
Retail [member] | Growth Markets [member]
Disclosure of operating segments [line items]
Result before taxation	294	222
Wholesale Banking [Member]
Disclosure of operating segments [line items]
Result before taxation	1,558	(204)
Wholesale Banking [Member] | Netherlands [member]
Disclosure of operating segments [line items]
Result before taxation	140	(310)
Wholesale Banking [Member] | Belgium [member]
Disclosure of operating segments [line items]
Result before taxation	215	62
Wholesale Banking [Member] | Germany [member]
Disclosure of operating segments [line items]
Result before taxation	203	(20)
Wholesale Banking [Member] | Other Challengers [member]
Disclosure of operating segments [line items]
Result before taxation	240	88
Wholesale Banking [Member] | Growth Markets [member]
Disclosure of operating segments [line items]
Result before taxation	91	62
Wholesale Banking [Member] | Wholesale Banking Rest Of World [member]
Disclosure of operating segments [line items]
Result before taxation	669	(85)
Wholesale Banking [Member] | Other [member]
Disclosure of operating segments [line items]
Result before taxation	0	(2)
Corporate Line Banking [member]
Disclosure of operating segments [line items]
Result before taxation	(53)	(34)
Corporate Line Banking [member] | Other [member]
Disclosure of operating segments [line items]
Result before taxation	€ (53)	€ (34)

Fair value of assets and liab_3

Fair value of assets and liabilities - Summary of valuation adjustment (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	€ (505)	€ (634)
Bid/Offer [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	(111)	(121)
Model Risk [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	(17)	(25)
CVA [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	(180)	(238)
DVA [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	(92)	(124)
CollVA [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	(14)	(16)
FVA [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Total Valuation Adjustments	€ (91)	€ (111)

Fair value of assets and liab_4

Fair value of assets and liabilities - Methods applied in determining fair values of financial assets and liabilities) (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Financial Assets
Financial assets at fair value through profit or loss	€ 121,402	€ 103,370
Financial assets at fair value through other comprehensive income	33,016	35,895
Financial Liabilities
Financial liabilities at fair value through profit or loss	87,141	82,781
Debt Securities [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	6,077	6,534
Deposits [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	59,323	48,114
Derivatives [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	20,937	27,365
Trading securities [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	804	768
Loans and receivables [member]
Financial Assets
Financial assets at fair value through profit or loss	72,820	54,998
Financial assets at fair value through other comprehensive income	889	1,056
Equity securities [member]
Financial Assets
Financial assets at fair value through profit or loss	14,123	8,037
Financial assets at fair value through other comprehensive income	2,434	1,862
Debt Securities [member]
Financial Assets
Financial assets at fair value through profit or loss	11,561	9,514
Financial assets at fair value through other comprehensive income	29,693	32,977
Derivatives [member]
Financial Assets
Financial assets at fair value through profit or loss	22,898	30,821
Level 1 [member]
Financial Assets
Financial assets at fair value through profit or loss	17,740	11,276
Financial assets at fair value through other comprehensive income	30,788	33,279
Financial Liabilities
Financial liabilities at fair value through profit or loss	1,658	1,879
Level 1 [member] | Debt Securities [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	862	1,124
Level 1 [member] | Deposits [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss		1
Level 1 [member] | Derivatives [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	62	55
Level 1 [member] | Trading securities [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	735	699
Level 1 [member] | Equity securities [member]
Financial Assets
Financial assets at fair value through profit or loss	13,976	7,897
Financial assets at fair value through other comprehensive income	2,266	1,687
Level 1 [member] | Debt Securities [member]
Financial Assets
Financial assets at fair value through profit or loss	3,755	3,378
Financial assets at fair value through other comprehensive income	28,522	31,592
Level 1 [member] | Derivatives [member]
Financial Assets
Financial assets at fair value through profit or loss	9	1
Level 2 [member]
Financial Assets
Financial assets at fair value through profit or loss	100,290	89,225
Financial assets at fair value through other comprehensive income	1,171	1,385
Financial Liabilities
Financial liabilities at fair value through profit or loss	85,151	80,505
Level 2 [member] | Debt Securities [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	5,047	5,231
Level 2 [member] | Deposits [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	59,319	48,111
Level 2 [member] | Derivatives [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	20,715	27,094
Level 2 [member] | Trading securities [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	69	70
Level 2 [member] | Loans and receivables [member]
Financial Assets
Financial assets at fair value through profit or loss	70,971	53,733
Level 2 [member] | Equity securities [member]
Financial Assets
Financial assets at fair value through profit or loss	2	2
Level 2 [member] | Debt Securities [member]
Financial Assets
Financial assets at fair value through profit or loss	6,556	4,867
Financial assets at fair value through other comprehensive income	1,171	1,385
Level 2 [member] | Derivatives [member]
Financial Assets
Financial assets at fair value through profit or loss	22,761	30,623
Level 3 [member]
Financial Assets
Financial assets at fair value through profit or loss	3,372	2,870
Financial assets at fair value through other comprehensive income	1,057	1,231
Financial Liabilities
Financial liabilities at fair value through profit or loss	331	398
Level 3 [member] | Debt Securities [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	168	180
Level 3 [member] | Deposits [Member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	4	2
Level 3 [member] | Derivatives [member]
Financial Liabilities
Financial liabilities at fair value through profit or loss	160	217
Level 3 [member] | Loans and receivables [member]
Financial Assets
Financial assets at fair value through profit or loss	1,849	1,265
Financial assets at fair value through other comprehensive income	889	1,056
Level 3 [member] | Equity securities [member]
Financial Assets
Financial assets at fair value through profit or loss	144	138
Financial assets at fair value through other comprehensive income	168	176
Level 3 [member] | Debt Securities [member]
Financial Assets
Financial assets at fair value through profit or loss	1,250	1,269
Level 3 [member] | Derivatives [member]
Financial Assets
Financial assets at fair value through profit or loss	€ 129	€ 197

Fair value of assets and liab_5

Fair value of assets and liabilities - Valuation techniques and range of unobservable inputs (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	€ 121,402	€ 103,370
Assets, at fair value through other comprehensive income	33,016	35,895
Liabilities, at fair value through profit or loss	87,141	82,781
Debt Securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	11,561	9,514
Assets, at fair value through other comprehensive income	29,693	32,977
Level 3 [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	3,372	2,870
Assets, at fair value through other comprehensive income	1,057	1,231
Assets	4,429	4,101	€ 4,768
Liabilities, at fair value through profit or loss	331	398
Financial liabilities at fair value	331	398	€ 490
Level 3 [member] | Loans and advances [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	1,363	1,090
Liabilities, at fair value through profit or loss	4	2
Level 3 [member] | Reverse (Repos) [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	486	176
Level 3 [member] | Structured notes [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Liabilities, at fair value through profit or loss	168	180
Level 3 [member] | Derivatives at rates [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	4	2
Liabilities, at fair value through profit or loss	35	38
Level 3 [member] | Derivatives at foreign exchange [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	1
Level 3 [member] | Derivative at credit [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	93	168
Liabilities, at fair value through profit or loss	96	154
Level 3 [member] | Derivatives at equity [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	30	24
Liabilities, at fair value through profit or loss	26	20
Level 3 [member] | Other derivatives [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	1	3
Liabilities, at fair value through profit or loss	2	3
Level 3 [member] | Loan and advances at fair value through other comprehensive income [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through other comprehensive income	889	1,056
Level 3 [member] | Equity, at fair value through other comprehensive income [Member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through other comprehensive income	168	176
Level 3 [member] | Debt Securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	1,250	1,269
Level 3 [member] | Equity securities [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Assets, at fair value through profit or loss	€ 144	137
Liabilities, at fair value through profit or loss		€ 1
Level 3 [member] | Minimum [member] | Price [member] | Loans and advances [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	0.00%	0.00%
Level 3 [member] | Minimum [member] | Price [member] | Structured notes [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	84.00%	74.00%
Level 3 [member] | Minimum [member] | Price [member] | Derivative at credit [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	99.00%	99.00%
Level 3 [member] | Minimum [member] | Price [member] | Derivatives at equity [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	3.00%	3.00%
Level 3 [member] | Minimum [member] | Price [member] | Loan and advances at fair value through other comprehensive income [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	99.00%	99.00%
Level 3 [member] | Minimum [member] | Credit spread (CS01) [member] | Loans and advances [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0	0
Level 3 [member] | Minimum [member] | Credit spread (CS01) [member] | Derivative at credit [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0002	0.0002
Level 3 [member] | Minimum [member] | Credit spread (CS01) [member] | Equity, at fair value through other comprehensive income [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0001	0.0002
Level 3 [member] | Minimum [member] | Equity volatility (%) [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	14.00%	14.00%
Level 3 [member] | Minimum [member] | Equity volatility (%) [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	5.00%	5.00%
Level 3 [member] | Minimum [member] | Equity/FX correlation [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	(0.3)	(0.7)
Level 3 [member] | Minimum [member] | Equity/FX correlation [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	(0.5)	(0.6)
Level 3 [member] | Minimum [member] | Dividend yield (%) [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	2.00%	0.00%
Level 3 [member] | Minimum [member] | Dividend yield (%) [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	0.00%	0.00%
Level 3 [member] | Minimum [member] | Interest rate volatility (%) [member] | Reverse (Repos) [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	3.00%	3.00%
Level 3 [member] | Minimum [member] | Interest rate volatility (%) [member] | Derivatives at rates [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0015	0.0012
Level 3 [member] | Minimum [member] | Interest rate volatility (%) [member] | Equity, at fair value through other comprehensive income [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	3.00%	3.00%
Level 3 [member] | Minimum [member] | Reset spread (%) [member] | Derivatives at rates [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	2.00%	2.00%
Level 3 [member] | Minimum [member] | Prepayment rate (%) [member] | Loans and advances [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	9.00%	9.00%
Level 3 [member] | Minimum [member] | FX volatility (bps ) [member] | Derivatives at foreign exchange [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread		0.0006
Level 3 [member] | Minimum [member] | Equity/equity correlation [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation		0.6
Level 3 [member] | Minimum [member] | Equity/equity correlation [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	0.5	0.5
Level 3 [member] | Minimum [member] | Commodity volatility [member] | Other derivatives [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	15.00%	18.00%
Level 3 [member] | Minimum [member] | Com/FX correlation [member] | Other derivatives [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation		(0.5)
Level 3 [member] | Minimum [member] | Other [member] | Equity, at fair value through other comprehensive income [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, other	0	63
Level 3 [member] | Minimum [member] | Debt Securities [member] | Price [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	0.00%	0.00%
Level 3 [member] | Minimum [member] | Equity securities [member] | Price, Non-Percent [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, price	0	0
Level 3 [member] | Maximum [member] | Price [member] | Loans and advances [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	101.00%	101.00%
Level 3 [member] | Maximum [member] | Price [member] | Structured notes [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	118.00%	109.00%
Level 3 [member] | Maximum [member] | Price [member] | Derivative at credit [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	100.00%	107.00%
Level 3 [member] | Maximum [member] | Price [member] | Derivatives at equity [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	3.00%	3.00%
Level 3 [member] | Maximum [member] | Price [member] | Loan and advances at fair value through other comprehensive income [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	100.00%	99.00%
Level 3 [member] | Maximum [member] | Credit spread (CS01) [member] | Loans and advances [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0250	0.0250
Level 3 [member] | Maximum [member] | Credit spread (CS01) [member] | Derivative at credit [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0599	0.1403
Level 3 [member] | Maximum [member] | Credit spread (CS01) [member] | Equity, at fair value through other comprehensive income [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0001	0.0002
Level 3 [member] | Maximum [member] | Equity volatility (%) [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	25.00%	25.00%
Level 3 [member] | Maximum [member] | Equity volatility (%) [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	83.00%	64.00%
Level 3 [member] | Maximum [member] | Equity/FX correlation [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	(0.3)	0.3
Level 3 [member] | Maximum [member] | Equity/FX correlation [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	0.1	0.1
Level 3 [member] | Maximum [member] | Dividend yield (%) [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	5.00%	5.00%
Level 3 [member] | Maximum [member] | Dividend yield (%) [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	20.00%	34.00%
Level 3 [member] | Maximum [member] | Interest rate volatility (%) [member] | Reverse (Repos) [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	4.00%	4.00%
Level 3 [member] | Maximum [member] | Interest rate volatility (%) [member] | Derivatives at rates [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread	0.0074	0.0070
Level 3 [member] | Maximum [member] | Interest rate volatility (%) [member] | Equity, at fair value through other comprehensive income [Member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	3.00%	3.00%
Level 3 [member] | Maximum [member] | Reset spread (%) [member] | Derivatives at rates [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	2.00%	2.00%
Level 3 [member] | Maximum [member] | Prepayment rate (%) [member] | Loans and advances [member] | Present value techniques [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	9.00%	9.00%
Level 3 [member] | Maximum [member] | FX volatility (bps ) [member] | Derivatives at foreign exchange [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, basis point spread		0.0010
Level 3 [member] | Maximum [member] | Equity/equity correlation [member] | Structured notes [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation		0.9
Level 3 [member] | Maximum [member] | Equity/equity correlation [member] | Derivatives at equity [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation	0.8	0.9
Level 3 [member] | Maximum [member] | Commodity volatility [member] | Other derivatives [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	79.00%	55.00%
Level 3 [member] | Maximum [member] | Com/FX correlation [member] | Other derivatives [member] | Option pricing model [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs,correlation		(0.3)
Level 3 [member] | Maximum [member] | Other [member] | Equity, at fair value through other comprehensive income [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, other	80	80
Level 3 [member] | Maximum [member] | Debt Securities [member] | Price [member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, percentage	104.00%	107.00%
Level 3 [member] | Maximum [member] | Equity securities [member] | Price, Non-Percent [Member] | Price based [member]
Disclosure of significant unobservable inputs used in fair value measurement of assets [line items]
Significant unobservable inputs, price	5,475	5,475

Fair value of assets and liab_6

Fair value of assets and liabilities - Changes in level 3 financial assets (Details) - Level 3 [member] - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Opening balance	€ 4,101	€ 4,768
Realised gain/loss recognised in the statement of profit or loss during the period	10	(383)
Revaluation recognised in other comprehensive income during the period	(8)	(46)
Purchase of assets	1,393	1,887
Sale of assets	(472)	(1,743)
Maturity/settlement	(94)	(354)
Reclassifications	(29)	224
Transfers into Level 3	11	523
Transfers out of Level 3	(496)	(755)
Exchange rate differences	10	(27)
Changes in the composition of the group and other changes	1	6
Closing balance	4,429	4,101
Financial asset mandatorily at FVPL [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	1,191	1,381
Realised gain/loss recognised in the statement of profit or loss during the period	12	(104)
Purchase of assets	834	1,180
Sale of assets	(265)	(973)
Maturity/settlement	(21)	(83)
Reclassifications	(16)	330
Transfers into Level 3		6
Transfers out of Level 3		(528)
Exchange rate differences	7	(24)
Changes in the composition of the group and other changes	1	5
Closing balance	1,743	1,191
Financial assets designated at FVPL [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	796	1,244
Realised gain/loss recognised in the statement of profit or loss during the period	0	(198)
Purchase of assets	489	212
Sale of assets	(25)	(270)
Maturity/settlement	(12)	(57)
Transfers into Level 3		1
Transfers out of Level 3		(138)
Closing balance	1,248	796
Financial assets at FVOCI [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	1,231	1,961
Realised gain/loss recognised in the statement of profit or loss during the period	(8)	(19)
Revaluation recognised in other comprehensive income during the period	(8)	(46)
Purchase of assets	54	39
Sale of assets	(147)	(419)
Maturity/settlement	(53)	(175)
Reclassifications	(13)	(105)
Transfers into Level 3	(3)	(1)
Exchange rate differences	3	(4)
Changes in the composition of the group and other changes	0	1
Closing balance	1,057	1,231
Trading assets [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	882	174
Realised gain/loss recognised in the statement of profit or loss during the period	5	(61)
Purchase of assets	14	453
Sale of assets	(32)	(73)
Maturity/settlement	(8)	(39)
Transfers into Level 3	14	517
Transfers out of Level 3	(496)	(90)
Exchange rate differences	0	0
Closing balance	379	882
Non-trading derivatives [member]
Disclosure of fair value measurement of assets [line items]
Opening balance	1	8
Realised gain/loss recognised in the statement of profit or loss during the period	0	(1)
Purchase of assets	3	3
Sale of assets	(3)	(8)
Maturity/settlement		(1)
Transfers out of Level 3		0
Closing balance	€ 2	€ 1

Fair value of assets and liab_7

Fair value of assets and liabilities - Changes in level 3 financial liabilities (Details) - Level 3 [member] - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of fair value measurement of liabilities [line items]
Opening balance	€ 398	€ 490
Realised gain/loss recognised in the statement of profit or loss during the period	77	(4)
Additions	81	736
Redemptions	(164)	(250)
Maturity/settlement	(40)	(146)
Transfers into Level 3	242	445
Transfers out of Level 3	(264)	(873)
Closing balance	331	398
Trading liabilities [Member]
Disclosure of fair value measurement of liabilities [line items]
Opening balance	180	195
Realised gain/loss recognised in the statement of profit or loss during the period	57	(2)
Additions	16	55
Redemptions	(2)	(116)
Maturity/settlement	(39)	(11)
Transfers into Level 3	14	170
Transfers out of Level 3	(96)	(111)
Closing balance	130	180
Non-trading derivatives liabilities [member]
Disclosure of fair value measurement of liabilities [line items]
Opening balance	39	110
Realised gain/loss recognised in the statement of profit or loss during the period	(2)	20
Additions	3	19
Redemptions	(3)	(45)
Maturity/settlement	0	(52)
Transfers into Level 3		8
Transfers out of Level 3	(3)	(23)
Closing balance	33	39
Financial liabilities designated as at fair value through profit or loss [member]
Disclosure of fair value measurement of liabilities [line items]
Opening balance	180	184
Realised gain/loss recognised in the statement of profit or loss during the period	22	(22)
Additions	62	662
Redemptions	(159)	(90)
Maturity/settlement	0	(83)
Transfers into Level 3	228	267
Transfers out of Level 3	(165)	(738)
Closing balance	€ 168	€ 180

Fair value of assets and liab_8

Fair value of assets and liabilities - Sensitivity analysis of level 3 instruments (Details) - Level 3 [member] - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Disclosure of fair value measurement of assets [line items]
Positive fair value movements from using reasonable possible alternatives	€ 86	€ 96
Negative fair value movements from using reasonable possible alternatives	(49)	(42)
Financial assets at fair value through profit or loss [member] | Equity (equity derivatives, structured notes) [member]
Disclosure of fair value measurement of assets [line items]
Positive fair value movements from using reasonable possible alternatives	3	33
Negative fair value movements from using reasonable possible alternatives	(21)	(14)
Financial assets at fair value through profit or loss [member] | Interest rates (Rates derivatives, FX derivatives) [member]
Disclosure of fair value measurement of assets [line items]
Positive fair value movements from using reasonable possible alternatives	15	20
Negative fair value movements from using reasonable possible alternatives	(1)	(1)
Financial assets at fair value through profit or loss [member] | Credit (Debt securities, Loans, structured notes, credit derivatives) [member]
Disclosure of fair value measurement of assets [line items]
Positive fair value movements from using reasonable possible alternatives	68	43
Negative fair value movements from using reasonable possible alternatives	€ (27)	€ (27)

Fair value of assets and liab_9

Fair value of assets and liabilities - Methods applied in determining fair values of financial assets and liabilities (carried at amortised cost) (Detail) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Financial Assets
Loans and advances to banks	€ 26,198	€ 25,364
Loans and advances to customers	607,777	593,970
Financial Liabilities
Deposits from banks	89,134	78,098
Customer deposits	620,564	609,517
Debt securities in issue	91,840	82,065	€ 118,528
Subordinated loans	14,791	15,805	€ 16,588
Financial assets [member]
Financial Assets
Loans and advances to banks	26,252	25,539
Loans and advances to customers	620,103	608,740
Securities at amortised cost	50,462	52,281
Financial assets	696,817	686,560
Financial assets [member] | Carrying amount approximates fair value [member]
Financial Assets
Loans and advances to banks	2,548	2,165
Loans and advances to customers	19,007	17,486
Securities at amortised cost	0	0
Financial assets	21,555	19,651
Financial assets [member] | Carrying amount [member]
Financial Assets
Loans and advances to banks	26,198	25,364
Loans and advances to customers	607,777	593,970
Securities at amortised cost	49,467	50,587
Financial assets	683,442	669,921
Financial liabilities [member]
Financial Liabilities
Deposits from banks	89,748	78,405
Customer deposits	620,682	609,972
Debt securities in issue	92,213	82,360
Subordinated loans	15,429	16,174
Financial liabilities	818,072	786,911
Financial liabilities [member] | Carrying amount approximates fair value [member]
Financial Liabilities
Deposits from banks	6,306	3,918
Customer deposits	590,870	580,262
Debt securities in issue		0
Subordinated loans	0	0
Financial liabilities	597,176	584,180
Financial liabilities [member] | Carrying amount [member]
Financial Liabilities
Deposits from banks	89,134	78,098
Customer deposits	620,564	609,517
Debt securities in issue	91,840	82,065
Subordinated loans	14,791	15,805
Financial liabilities	816,329	785,484
Level 1 [member] | Financial assets [member]
Financial Assets
Loans and advances to banks	0	0
Loans and advances to customers	0	0
Securities at amortised cost	47,444	49,109
Financial assets	47,444	49,109
Level 1 [member] | Financial liabilities [member]
Financial Liabilities
Deposits from banks	0
Customer deposits	0
Debt securities in issue	51,051	51,906
Subordinated loans	14,263	15,013
Financial liabilities	65,314	66,919
Level 2 [member] | Financial assets [member]
Financial Assets
Loans and advances to banks	7,714	7,763
Loans and advances to customers	17,828	14,595
Securities at amortised cost	2,433	2,550
Financial assets	27,975	24,908
Level 2 [member] | Financial liabilities [member]
Financial Liabilities
Deposits from banks	77,571	68,473
Customer deposits	17,081	14,007
Debt securities in issue	22,879	24,005
Subordinated loans	1,167	1,161
Financial liabilities	118,698	107,645
Level 3 [member] | Financial assets [member]
Financial Assets
Loans and advances to banks	15,990	15,611
Loans and advances to customers	583,268	576,659
Securities at amortised cost	586	622
Financial assets	599,844	592,892
Level 3 [member] | Financial liabilities [member]
Financial Liabilities
Deposits from banks	5,870	6,014
Customer deposits	12,730	15,704
Debt securities in issue	18,283	6,449
Financial liabilities	€ 36,883	€ 28,167

Fair value of assets and lia_10

Fair value of assets and liabilities - Additional information (Details) - EUR (€)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets and liabilities [Line Items]
Description of valuation methods	The estimated fair values represent the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. It is a market-based measurement, which is based on assumptions that market participants would use and takes into account the characteristics of the asset or liability that market participants would take into account when pricing the asset or liability. Fair values of financial assets and liabilities are based on quoted prices in active market where available. When such quoted prices are not available, the fair value is determined by using valuation techniques. The fair value hierarchy consists of three levels, depending upon whether fair values were determined based on (unadjusted) quoted prices in an active market (Level 1), valuation techniques with observable inputs (Level 2) or valuation techniques that incorporate inputs which are unobservable and which have a more than insignificant impact on the fair value of the instrument (Level 3).
Financial assets measured at fair value	€ 63,217,000,000	€ 44,305,000,000
Financial liabilities measured at fair value	87,141,000,000	82,781,000,000
Transfers between Level 1 and Level 2	0
Financial assets classified as Level 3 based on quoted price	€ 1,500,000,000	€ 2,100,000,000
Percentage on financial asset based on unadjusted quoted price	34.60%	52.30%
Amount of risk neutral designed financial assets	€ 1,600,000,000	€ 900,000,000
Remaining financial assets classified as level 3 using valuation techniques	1,300,000,000	1,100,000,000
Financial Liabilities classified as Level 3 based on unadjusted quoted price	200,000,000	100,000,000
Financial Liabilities designed to be fully neutral in terms of market risk	€ 100,000,000	100,000,000
Comparative price percentage for securities without quoted prices and without expected price recovery	0.00%
Comparative price percentage for securities without quoted prices and with expected price recovery	100.00%
Minimum level of volatility	0.00%
Description of interest rate	Reset spreads are key inputs to mortgage linked prepayment swaps valuation. Reset spread is the future spread at which mortgages will re-price at interest rate reset dates.
Mortgage prepayment rate	5.00%
Financial liabilities, class [member]
Disclosure of fair value measurement of assets and liabilities [Line Items]
Unrealised gains on (losses) recognised in the statement of profit or loss	€ 77,000,000	(4,000,000)
Financial assets at fair value
Disclosure of fair value measurement of assets and liabilities [Line Items]
Unrealised gains on (losses) recognised in the statement of profit or loss	35,000,000	312,000,000
Level 3 [member]
Disclosure of fair value measurement of assets and liabilities [Line Items]
Financial assets, at fair value	4,429,000,000	4,101,000,000	€ 4,768,000,000
Financial liabilities measured at fair value	€ 331,000,000	€ 398,000,000
Percentage on financial asset based on unadjusted quoted price	52.40%	34.60%
Remaining financial liabilities classified as level 3 using valuation techniques	€ 100,000,000	€ 200,000,000
Percentage of valuation certainty	90.00%

Capital management - Main credi

Capital management - Main credit ratings of ING (Details)	6 Months Ended
	Jun. 30, 2021
Standard & Poor [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	A-
Outlook	Stable
Moody's [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	Baa1
Outlook	Stable
Fitch [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	A+
Outlook	Negative
ING Bank N.V. [member] | Standard & Poor [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	A+
Credit rating status short term	A-1
Outlook	Stable
ING Bank N.V. [member] | Moody's [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	Aa3
Credit rating status short term	P-1
Outlook	Stable
ING Bank N.V. [member] | Fitch [Member]
Disclosure Of Capital Management [Line Items]
Credit rating status long term	AA-
Credit rating status short term	F1+
Outlook	Negative

Capital management - Additional

Capital management - Additional information (Details) - EUR (€) € / shares in Units, € in Millions	Jul. 23, 2021	Jun. 30, 2021	Dec. 31, 2020
Departure From Requirement Of IFRS [Member]
Disclosure Of Capital Management [Line Items]
Common equity Tier 1 required		15.70%	15.50%
CET1, ambition		12.50%
Resilient net profit reserved for distribution outside CET 1 capital		€ 1,232
MDA Trigger, CET1		10.51%
Maximum distributable amount, management basis points buffer		2.00%
Dividends payable		€ 4,031
Dividend pay-out ratio		50.00%
Events After Reporting Period [Member] | Departure From Requirement Of IFRS [Member]
Disclosure Of Capital Management [Line Items]
Proposed cash dividend, per ordinary share	€ 0.48
Percentage of resilient net profit distributed	33.33%
Events After Reporting Period [Member] | Results IFRS-EU [member] | Dividends 2020 [Member]
Disclosure Of Capital Management [Line Items]
Proposed cash dividend, per ordinary share	€ 0.27
Events After Reporting Period [Member] | Results IFRS-EU [member] | Dividends 2021 [Member]
Disclosure Of Capital Management [Line Items]
Proposed cash dividend, per ordinary share	€ 0.21

Risk management - Gross carryin

Risk management - Gross carrying amount per IFRS 9 stage and rating class (Details) - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Of Credit Risk Exposure [Line Items]
Provision for non-credit replacement guarantees	€ 85	€ 75
Gross Carrying Amount [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	126,900	118,400
Gross Carrying Amount [Member] | Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	3
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	949,228	916,942
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	879,645	841,562
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	56,755	61,981
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	12,827	13,398
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	118,846	109,780
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	118,799	109,734
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	47	46
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	109,419	109,422
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	109,118	108,776
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	301	646
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	151,992	138,698
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	151,056	137,901
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	935	797
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	317,493	302,341
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	307,902	294,923
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	9,591	7,418
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	175,461	177,588
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	160,025	159,076
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	15,436	18,513
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	48,397	52,077
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	28,468	28,335
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	19,930	23,742
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	9,611	7,930
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	4,277	2,817
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	5,334	5,113
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 18 (CC) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	2,888	3,384
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 18 (CC) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	2,888	3,384
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 19 (C) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	2,293	2,323
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 19 (C) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	2,293	2,323
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 20 - 22 (D) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	12,827	13,398
Gross Carrying Amount [Member] | In accordance with IFRS 9 [member] | 20 - 22 (D) [member] | Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	12,827	13,398
Accumulated Impairment [Member] | In accordance with IFRS 9 [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	5,427	5,854
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	505	581
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	1,306	1,476
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	3,616	3,797
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	3	3
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	3	3
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 1 (AAA) [Member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	0	0
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	4	6
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	4	6
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 2-4 (AA) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	0	0
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	17	28
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	17	27
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 5 - 7 (A) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	1	1
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	84	100
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	69	88
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 8 - 10 (BBB) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	15	12
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	317	372
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	211	239
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 11 - 13 (BB) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	106	133
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	667	777
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	192	208
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 14 - 16 (B) [Member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	475	570
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	301	269
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member] | 12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	9	9
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 17 (CCC) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	291	259
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 18 (CC) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	189	248
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 18 (CC) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	189	248
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 19 (C) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	229	254
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 19 (C) [member] | Lifetime expected credit losses [member] | Not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	229	254
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 20 - 22 (D) [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	3,616	3,797
Accumulated Impairment [Member] | In accordance with IFRS 9 [member] | 20 - 22 (D) [member] | Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial Assets, Carrying Value	€ 3,616	€ 3,797

Risk management - Changes in gr

Risk management - Changes in gross carrying amounts and loan loss provisions (Details) - EUR (€) € in Millions	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Disclosure Of Credit Risk Exposure [Line Items]
Increase in loan loss provisions	€ 131	€ 1,998
De-netting of cash pool balances	(2,500)		€ (2,200)
Liquidity facility	(2,200)		(2,200)
Other items not included in receivables	100		(300)
Value adjustment hedged items in respect of portfolio hedges	(800)		(1,000)
Securities at amortised cost [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Repurchase agreements and cash collateral on securities lent	(6,500)		(6,400)
Derivatives [member]
Disclosure Of Credit Risk Exposure [Line Items]
Repurchase agreements and cash collateral on securities lent	(6,100)		(8,300)
12-month expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Net remeasurement of loan loss provision	(114)
Credit impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	13,400
Financial assets			13,400
Not credit-impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	62,000
Net remeasurement of loan loss provision	(62)
Financial assets			62,000
Gross Carrying Amount [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	118,400
Financial assets	126,900		118,400
Gross Carrying Amount [Member] | Loans and advances to central banks [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	109,200
Financial assets	119,600		109,200
Gross Carrying Amount [Member] | Loans and advances to banks [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	25,400
Financial assets	26,200		25,400
Gross Carrying Amount [Member] | Financial assets at FVOCI [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	34,000
Financial assets	30,600		34,000
Gross Carrying Amount [Member] | Securities at amortised cost [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	50,600
Financial assets	49,500		50,600
Gross Carrying Amount [Member] | Loans And Advances To Customers [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	599,700
Financial assets	613,100		599,700
Gross Carrying Amount [Member] | Assets held for sale [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	1,300
Gross Carrying Amount [Member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	916,942	869,284	869,284
Transfer into 12-month ECL (Stage 1)			0
Transfer into lifetime ECL not credit impaired (Stage 2)			0
Transfer into lifetime ECL credit impaired (Stage 3)			0
Net remeasurement of loan loss provision			0
New financial assets originated or purchased	77,861		161,333
Financial assets that have been derecognised	(41,066)		(123,919)
Net drawdowns and repayments	(4,509)		11,444
Write-offs			(1,200)
Financial assets	949,228		916,942
Gross Carrying Amount [Member] | 12-month expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	841,562	817,247	817,247
Transfer into 12-month ECL (Stage 1)	13,305		9,139
Transfer into lifetime ECL not credit impaired (Stage 2)	(15,575)		(39,093)
Transfer into lifetime ECL credit impaired (Stage 3)	(1,228)		(3,592)
Net remeasurement of loan loss provision			0
New financial assets originated or purchased	77,861		161,333
Financial assets that have been derecognised	(33,762)		(116,035)
Net drawdowns and repayments	(2,518)		12,563
Financial assets	879,645		841,562
Gross Carrying Amount [Member] | Credit impaired [member] | Lifetime expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3
Gross Carrying Amount [Member] | Credit impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	13,398	10,955	10,955
Transfer into 12-month ECL (Stage 1)	(475)		(240)
Transfer into lifetime ECL not credit impaired (Stage 2)	(771)		(509)
Transfer into lifetime ECL credit impaired (Stage 3)	2,436		5,471
Net remeasurement of loan loss provision			0
New financial assets originated or purchased			0
Financial assets that have been derecognised	(1,539)		(897)
Net drawdowns and repayments	(222)		(181)
Write-offs			(1,200)
Financial assets	12,827		13,398
Gross Carrying Amount [Member] | Purchased credit impaired [member] | Lifetime expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3
Financial assets			3
Gross Carrying Amount [Member] | Not credit-impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	61,981	41,082	41,082
Transfer into 12-month ECL (Stage 1)	(12,830)		(8,899)
Transfer into lifetime ECL not credit impaired (Stage 2)	16,345		39,601
Transfer into lifetime ECL credit impaired (Stage 3)	(1,208)		(1,879)
Net remeasurement of loan loss provision			0
New financial assets originated or purchased			0
Financial assets that have been derecognised	(5,765)		(6,987)
Net drawdowns and repayments	(1,768)		(938)
Financial assets	56,755		61,981
Accumulated Impairment [Member] | Contingent liabilities (credit replacements) [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	17
Financial assets	23		17
Accumulated Impairment [Member] | Loans and advances to central banks [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3
Financial assets	4		3
Accumulated Impairment [Member] | Loans and advances to banks [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	23
Financial assets	20		23
Accumulated Impairment [Member] | Financial assets at FVOCI [member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	14
Financial assets	12		14
Accumulated Impairment [Member] | Securities at amortised cost [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	17
Financial assets	22		17
Accumulated Impairment [Member] | Loans And Advances To Customers [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	5,779
Financial assets	5,347		5,779
Accumulated Impairment [Member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	5,854	4,646	4,646
Transfer into 12-month ECL (Stage 1)	(204)		(194)
Transfer into lifetime ECL not credit impaired (Stage 2)	83		518
Transfer into lifetime ECL credit impaired (Stage 3)	359		1,325
Net remeasurement of loan loss provision	(87)		1,259
New financial assets originated or purchased	80		178
Financial assets that have been derecognised	(163)		(428)
Changes in models/risk parameters	53		7
Increase in loan loss provisions	121		2,666
Write-offs	(472)		(1,200)
Recoveries of amounts previously written off	21		39
Foreign exchange and other movements	(97)		(297)
Financial assets	5,427		5,854
Accumulated Impairment [Member] | 12-month expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	581	490	490
Transfer into 12-month ECL (Stage 1)	16		24
Transfer into lifetime ECL not credit impaired (Stage 2)	(23)		(76)
Transfer into lifetime ECL credit impaired (Stage 3)	(3)		(30)
Net remeasurement of loan loss provision	(114)		109
New financial assets originated or purchased	80		178
Financial assets that have been derecognised	(31)		(85)
Changes in models/risk parameters	4
Increase in loan loss provisions	(70)		119
Foreign exchange and other movements	(6)		(28)
Financial assets	505		581
Accumulated Impairment [Member] | Credit impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3,797	3,275	3,275
Transfer into 12-month ECL (Stage 1)	(19)		(18)
Transfer into lifetime ECL not credit impaired (Stage 2)	(79)		(57)
Transfer into lifetime ECL credit impaired (Stage 3)	426		1,518
Net remeasurement of loan loss provision	89		700
Financial assets that have been derecognised	(87)		(236)
Changes in models/risk parameters	33
Increase in loan loss provisions	362		1,908
Write-offs	(472)		(1,200)
Recoveries of amounts previously written off	21		39
Foreign exchange and other movements	(92)		(226)
Financial assets	3,616		3,797
Accumulated Impairment [Member] | Not credit-impaired [member] | Lifetime expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	1,476	€ 881	881
Transfer into 12-month ECL (Stage 1)	(202)		(200)
Transfer into lifetime ECL not credit impaired (Stage 2)	185		651
Transfer into lifetime ECL credit impaired (Stage 3)	(64)		(163)
Net remeasurement of loan loss provision	(62)		450
Financial assets that have been derecognised	(46)		(107)
Changes in models/risk parameters	16		7
Increase in loan loss provisions	(171)		638
Foreign exchange and other movements	1		(42)
Financial assets	€ 1,306		€ 1,476

Risk management - Sensitivity a

Risk management - Sensitivity analysis (Details) - EUR (€) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Netherlands [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Reportable ECL	€ 382	€ 468
Netherlands [member] | Upside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 341	€ 383
Probability weighting	20.00%	20.00%
Netherlands [member] | Upside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	3.30%	5.30%
2022	4.50%	3.30%
2023	3.20%	2.80%
Netherlands [member] | Upside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.00%	5.10%
2022	4.00%	3.90%
2023	3.20%	3.00%
Netherlands [member] | Upside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	11.00%	8.10%
2022	16.30%	6.30%
2023	4.60%	4.70%
Netherlands [member] | Baseline Scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 374	€ 441
Probability weighting	60.00%	60.00%
Netherlands [member] | Baseline Scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	2.60%	2.80%
2022	3.20%	2.90%
2023	1.90%	1.90%
Netherlands [member] | Baseline Scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.80%	5.80%
2022	4.80%	5.20%
2023	4.70%	4.70%
Netherlands [member] | Baseline Scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	7.90%	(1.90%)
2022	2.60%	(1.60%)
2023	2.50%	4.50%
Netherlands [member] | Downside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 448	€ 636
Probability weighting	20.00%	20.00%
Netherlands [member] | Downside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	0.10%	(4.90%)
2022	0.60%	4.80%
2023	1.00%	1.40%
Netherlands [member] | Downside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	6.10%	7.70%
2022	7.10%	7.80%
2023	7.70%	7.90%
Netherlands [member] | Downside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.60%	(12.30%)
2022	(12.60%)	(11.00%)
2023	(0.40%)	4.30%
Germany [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Reportable ECL	€ 511	€ 559
Germany [member] | Upside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 486	€ 494
Probability weighting	20.00%	20.00%
Germany [member] | Upside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.90%	6.90%
2022	4.80%	3.30%
2023	2.60%	2.40%
Germany [member] | Upside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	6.40%	7.30%
2022	6.00%	6.20%
2023	5.50%	5.80%
Germany [member] | Upside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	2.70%	(0.20%)
2022	2.60%	4.20%
2023	3.50%	4.80%
Germany [member] | Baseline Scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 507	€ 540
Probability weighting	60.00%	60.00%
Germany [member] | Baseline Scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.20%	4.50%
2022	3.50%	3.30%
2023	2.20%	2.30%
Germany [member] | Baseline Scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	7.00%	7.50%
2022	6.40%	6.30%
2023	6.20%	6.30%
Germany [member] | Baseline Scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	1.90%	(1.70%)
2022	1.60%	3.50%
2023	2.60%	3.80%
Germany [member] | Downside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 550	€ 681
Probability weighting	20.00%	20.00%
Germany [member] | Downside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	2.60%	(0.40%)
2022	1.40%	4.00%
2023	1.70%	2.20%
Germany [member] | Downside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	8.20%	9.40%
2022	8.50%	9.10%
2023	8.50%	8.80%
Germany [member] | Downside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	1.10%	(3.60%)
2022	(0.10%)	2.50%
2023	1.70%	2.90%
Belgium [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Reportable ECL	€ 543	€ 558
Belgium [member] | Upside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 517	€ 504
Probability weighting	20.00%	20.00%
Belgium [member] | Upside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.50%	7.60%
2022	5.90%	3.30%
2023	1.90%	1.50%
Belgium [member] | Upside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	3.30%	3.00%
2022	2.70%	2.20%
2023	2.00%	1.80%
Belgium [member] | Upside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	10.60%	3.50%
2022	6.80%	8.30%
2023	4.00%	6.60%
Belgium [member] | Baseline Scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 540	€ 541
Probability weighting	60.00%	60.00%
Belgium [member] | Baseline Scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	3.30%	3.90%
2022	4.10%	3.40%
2023	1.50%	1.60%
Belgium [member] | Baseline Scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.20%	4.10%
2022	3.80%	3.50%
2023	3.60%	3.50%
Belgium [member] | Baseline Scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	9.40%	0.40%
2022	3.10%	4.80%
2023	0.70%	3.10%
Belgium [member] | Downside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 580	€ 662
Probability weighting	20.00%	20.00%
Belgium [member] | Downside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	1.30%	(2.40%)
2022	1.00%	3.50%
2023	0.20%	1.30%
Belgium [member] | Downside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	5.30%	5.60%
2022	5.40%	5.30%
2023	5.50%	5.60%
Belgium [member] | Downside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	7.90%	(3.50%)
2022	(1.50%)	0.80%
2023	(2.90%)	(0.90%)
USA [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Reportable ECL	€ 115	€ 189
USA [member] | Upside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 86	€ 93
Probability weighting	20.00%	20.00%
USA [member] | Upside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	8.20%	5.60%
2022	5.30%	4.10%
2023	3.00%	3.80%
USA [member] | Upside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.30%	5.00%
2022	2.80%	3.00%
2023	2.00%	1.90%
USA [member] | Upside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	11.60%	6.20%
2022	8.70%	9.40%
2023	9.90%	9.30%
USA [member] | Baseline Scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 107	€ 134
Probability weighting	60.00%	60.00%
USA [member] | Baseline Scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	6.60%	4.00%
2022	4.30%	3.20%
2023	2.30%	2.50%
USA [member] | Baseline Scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.70%	6.00%
2022	3.80%	4.70%
2023	3.60%	4.10%
USA [member] | Baseline Scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	11.10%	4.30%
2022	4.90%	4.10%
2023	4.10%	4.00%
USA [member] | Downside scenario [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Un-weighted ECL	€ 167	€ 448
Probability weighting	20.00%	20.00%
USA [member] | Downside scenario [Member] | Real GDP [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	4.40%	(6.30%)
2022	1.20%	6.80%
2023	0.70%	1.90%
USA [member] | Downside scenario [Member] | Unemployment [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	6.70%	8.50%
2022	6.70%	7.90%
2023	7.50%	7.60%
USA [member] | Downside scenario [Member] | HPI [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
2021	10.20%	1.20%
2022	(0.10%)	(1.90%)
2023	(2.30%)	(2.30%)

Risk management - Non-derivativ

Risk management - Non-derivative financial instruments to transition to alternative benchmarks (Details) - Non-Derivative Financial Instruments To Transition To Alternative Benchmarks [Member] - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	€ 41,196	€ 38,963
Financial Liabilities, Carrying Value	2,310	4,873
Off balance sheet commitments	19,630	16,111
GBP LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	6,825	6,912
Financial Liabilities, Carrying Value	424	259
Off balance sheet commitments	3,798	3,732
USD LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	33,703	30,959
Financial Liabilities, Carrying Value	1,459	3,796
Off balance sheet commitments	12,445	9,376
CHF LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	243	345
Financial Liabilities, Carrying Value	50	42
Off balance sheet commitments	404	321
JPY LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	225	225
Financial Liabilities, Carrying Value	33	41
Off balance sheet commitments	136	79
EUR LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value	200	422
Financial Liabilities, Carrying Value		8
Off balance sheet commitments	2,808	2,564
EONIA [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Financial Assets, Carrying Value		100
Financial Liabilities, Carrying Value	344	728
Off balance sheet commitments	€ 39	€ 39

Risk management - Derivative fi

Risk management - Derivative financial instruments to transition to alternative benchmarks (Details) - Derivative Financial Instruments To Transition To Alternative Benchmarks [Member] - Derivatives By Benchmark Rate [Member] - EUR (€) € in Millions	Jun. 30, 2021	Dec. 31, 2020
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	538,013	508,457
GBP LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	31,045	27,031
USD LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	369,056	355,066
CHF LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	12,308	9,710
JPY LIBOR [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	92,874	87,057
EONIA [Member]
Disclosure Of Financial Instrument Exposure [Line Items]
Nominal value	32,730	29,593

Risk management - Credit risk m

Risk management - Credit risk management, portfolio quality and concentration and loans loss provisions - Additional information (Details) € in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021EUR (€)NumberOfCustomers	Dec. 31, 2020EUR (€)	Dec. 31, 2019EUR (€)
Disclosure Of Credit Risk Exposure [Line Items]
Number of payment holidays granted to customers related to COVID-19 pandemic | NumberOfCustomers	159,000
Percent of granted payment holidays expired	96.00%
Business Lending [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	65.00%
Consumer Lending [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	35.00%
Loans [Member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	€ 5,427	€ 5,854	€ 4,646
Net remeasurement of loan loss provision	(87)	1,259
Transfer into lifetime ECL not credit impaired (Stage 2)	83	518
In accordance with IFRS 9 [member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	€ 5,427	€ 5,854
12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	92.70%	91.80%
12-month expected credit losses [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Net remeasurement of loan loss provision	€ (114)
12-month expected credit losses [member] | Loans [Member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	505	€ 581	490
Net remeasurement of loan loss provision	(114)	109
Transfer into lifetime ECL not credit impaired (Stage 2)	(23)	(76)
12-month expected credit losses [member] | In accordance with IFRS 9 [member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	€ 505	€ 581
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	6.00%	6.80%
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Increase (decrease) in financial assets	€ (5,200)
Financial assets		€ 62,000
Net remeasurement of loan loss provision	(62)
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	1,306	1,476	881
Net remeasurement of loan loss provision	(62)	450
Transfer into lifetime ECL not credit impaired (Stage 2)	185	651
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member] | Significant LT PD trigger [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Increase (decrease) in financial assets	(5,400)
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member] | Watchlist Trigger [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Increase (decrease) in financial assets	(3,300)
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member] | Forbearance [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Increase (decrease) in financial assets	2,000
Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | In accordance with IFRS 9 [member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	€ 1,306	€ 1,476
Lifetime expected credit losses [member] | Credit impaired [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	1.40%	1.50%
Lifetime expected credit losses [member] | Credit impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Increase (decrease) in financial assets	€ 600
Financial assets		€ 13,400
Lifetime expected credit losses [member] | Credit impaired [member] | Loans [Member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3,616	3,797	€ 3,275
Net remeasurement of loan loss provision	89	700
Transfer into lifetime ECL not credit impaired (Stage 2)	(79)	(57)
Lifetime expected credit losses [member] | Credit impaired [member] | In accordance with IFRS 9 [member] | Accumulated Impairment [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	3,616	3,797
Aviation [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Outstanding amount in portfolio	€ 4,300	€ 4,600
Percentage of total outstandings	0.47%	0.52%
Aviation [Member] | Substandard grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	0.00%	1.30%
Aviation [Member] | Non-performing grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	1.80%	4.50%
Hospitality & Leisure [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Outstanding amount in portfolio	€ 5,400	€ 5,900
Percentage of total outstandings	0.59%	0.67%
Hospitality & Leisure [Member] | Substandard grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	9.90%	9.70%
Hospitality & Leisure [Member] | Non-performing grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	7.20%	6.20%
Non-food Retail [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Outstanding amount in portfolio	€ 11,000	€ 10,800
Percentage of total outstandings	1.21%	1.22%
Non-food Retail [Member] | Substandard grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	1.20%	0.70%
Non-food Retail [Member] | Non-performing grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	3.00%	3.30%
Transportation and logistics [member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	11.00%
Real estate [member]
Disclosure Of Credit Risk Exposure [Line Items]
Outstanding amount in portfolio	€ 53,100	€ 54,400
Percentage of total outstandings	5.81%	6.13%
Real estate [member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	10.00%
Increase (decrease) in financial assets	€ (800)
Real estate [member] | Substandard grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	0.80%	1.20%
Real estate [member] | Non-performing grade [member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of total outstandings	1.50%	1.20%
Services & food [Member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	9.00%
Increase (decrease) in financial assets	€ (1,300)
Beverages & Personal Care [Member] | Lifetime expected credit losses [member] | Financial instruments not credit-impaired [member] | Loans [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Percentage of gross carrying amount of portfolio	8.00%
Increase (decrease) in financial assets	€ (800)
Belgium And Netherlands [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Exposure of loans for which payment holiday was granted		€ 17.5
Percent of customers located in specific area, related to payment holidays		56.00%
Belgium [member]
Disclosure Of Credit Risk Exposure [Line Items]
Management adjustment, reflect risks in payment holidays	146	€ 131
Netherlands [member]
Disclosure Of Credit Risk Exposure [Line Items]
Management adjustment, reflect risks in payment holidays	€ 99	€ 85

Risk management - Macroeconomic

Risk management - Macroeconomic scenarios, sensitivity analysis and market risk - Additional information (Details) Contract in Thousands, $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021EUR (€)Contract	Dec. 31, 2020EUR (€)	Jun. 30, 2021USD ($)Contract	Dec. 31, 2020USD ($)
Disclosure Of Credit Risk Exposure [Line Items]
Global output percent	3.20%
Anticipated global output expected growth year one	6.00%
Anticipated global output expected growth year two	4.30%
Anticipated global output expected growth after year two	3.00%
Forecast percent	6.00%	5.00%
Global level recovery percent	4.30%	3.80%
Overlay, due to time lags	€ 296,000,000	€ 394,000,000
Management adjustment for upstream oil book	39,000,000	25,000,000
Unweighted ECL for all collective provisioned clients in upside scenario	2,757,000,000
Unweighted ECL for all collective provisioned clients in baseline scenario	2,933,000,000
Unweighted ECL for all collective provisioned clients in down scenario	3,307,000,000
Total ECL collective-assessment for performing assets | $			$ 1,418	$ 1,678
Reportable collective provisions	2,973,000,000
Non-Derivative Liabilities Have Yet To Transition To Alternative Benchmark Rates [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Financial assets	41,000,000,000	39,000,000,000
Financial liabilities	€ 2,000,000,000	€ 5,000,000
Number of contracts that have yet to transition to alternative benchmark rate | Contract	15		15
Committed undrawn credit facilities	€ 20,000,000,000
Derivative Financial Instruments To Transition To Alternative Benchmarks [Member] | Derivatives By Benchmark Rate [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Nominal value	538,013,000,000	508,457,000,000
12-month expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Hypothetical collective-assessment ECLs | $			$ 989	1,242
Lifetime expected credit losses [member]
Disclosure Of Credit Risk Exposure [Line Items]
Hypothetical collective-assessment ECLs | $			$ 2,665	$ 3,552
Retail Banking [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Threshold basis points	0.75%
Wholesale Banking [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Threshold basis points	1.00%
Small medium size enterprises [Member]
Disclosure Of Credit Risk Exposure [Line Items]
Threshold basis points	2.50%
Australia [member]
Disclosure Of Credit Risk Exposure [Line Items]
Management adjustment, reflect risks in payment holidays	€ 17,000,000	€ 28,000,000
USA [member]
Disclosure Of Credit Risk Exposure [Line Items]
Anticipated global output expected growth year one	6.60%
Anticipated global output expected growth year two	4.30%