Federal Home Loan Bank and Federal Reserve Bank, Loans Pledged

No definition available.

Name:	ax_FederalHomeLoanBankAndFederalReserveBankLoansPledged
Namespace Prefix:	ax_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing Receivable, Ratio Of Nonperforming Loans Considered TDRs

+ References

No definition available.

+ Details

Name:	ax_FinancingReceivableRatioOfNonperformingLoansConsideredTDRs
Namespace Prefix:	ax_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Financing Receivable, TDRs With Timely Payments Considered Nonperforming, Term

+ References

No definition available.

+ Details

Name:	ax_FinancingReceivableTDRsWithTimelyPaymentsConsideredNonperformingTerm
Namespace Prefix:	ax_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Financing Receivable, Troubled Debt Restructuring Classified As Performing, Number

+ References

No definition available.

+ Details

Name:	ax_FinancingReceivableTroubledDebtRestructuringClassifiedAsPerformingNumber
Namespace Prefix:	ax_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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

- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

+ Details

Name:	us-gaap_FinancingReceivableNonaccrualInterestIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 35
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL49126937-111524

+ Details

Name:	us-gaap_MortgageLoansInProcessOfForeclosureAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_PerformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LOANS & ALLOWANCE FOR CREDIT LOSSES - NARRATIVE (Details)	3 Months Ended		9 Months Ended
	Mar. 31, 2023 USD ($) loan	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($) loan	Mar. 31, 2022 USD ($)	Jun. 30, 2022 USD ($) loan
Financing Receivable, Impaired [Line Items]
FHLB and FRB, loans pledged	$ 9,308,200,000		$ 9,308,200,000
Mortgage loans in process of foreclosure, amount	24,000,000		24,000,000		$ 20,700,000
Nonaccrual
Financing Receivable, Impaired [Line Items]
Interest income recognized on nonaccrual loans	$ 0	$ 0	$ 0	$ 0
Ratio of nonaccrual loans and leases considered TDRs	1.30%		1.30%		1.18%
Period over which borrowers can make timely payments after TDR considered non-performing (in months)			6 months
Performing
Financing Receivable, Impaired [Line Items]
Number or TDRs classified as performing \| loan	0		0		0