XML 65 R55.htm IDEA: XBRL DOCUMENT v3.21.2

Loans and Leases - Summary of Financial Effects of Troubled Debt Restructurings (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) Investment	Sep. 30, 2020 USD ($) Investment	Sep. 30, 2021 USD ($) Investment	Sep. 30, 2020 USD ($) Investment
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment			3	43
Pre-Modification Recorded Investment			$ 12	$ 24
Post-Modification Recorded Investment			$ 12	$ 23
Weighted Average Interest Rate, Pre-Modification			4.18%	5.91%
Weighted Average Interest Rate, Post-Modification			3.36%	3.08%
Trouble debt restructuring, charge-off amount				$ 1
Commercial and Industrial
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment		23		42
Pre-Modification Recorded Investment		$ 5		$ 9
Post-Modification Recorded Investment		$ 5		$ 8
Weighted Average Interest Rate, Pre-Modification		1.66%		2.36%
Weighted Average Interest Rate, Post-Modification		1.66%		2.20%
Trouble debt restructuring, charge-off amount				$ 1
Commercial Real Estate
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment	2		2	1
Pre-Modification Recorded Investment	$ 4		$ 4	$ 15
Post-Modification Recorded Investment	$ 4		$ 4	$ 15
Weighted Average Interest Rate, Pre-Modification	6.00%		6.00%	8.00%
Weighted Average Interest Rate, Post-Modification	3.55%		3.55%	3.50%
Multi-Family
Financing Receivable Modifications [Line Items]
Number of loans classified as a non-accrual TDRs | Investment			1
Pre-Modification Recorded Investment			$ 8
Post-Modification Recorded Investment			$ 8
Weighted Average Interest Rate, Pre-Modification			3.13%
Weighted Average Interest Rate, Post-Modification			3.25%

X

- Definition

Weighted Average Interest Rate Post Modification

+ References

No definition available.

+ Details

Name:	nycb_WeightedAverageInterestRatePostModification
Namespace Prefix:	nycb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted Average Interest Rate Pre Modification

+ References

No definition available.

+ Details

Name:	nycb_WeightedAverageInterestRatePreModification
Namespace Prefix:	nycb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

+ Details

Name:	us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

+ Details

Name:	us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=srt_MultifamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: