BANK DEPOSITS, Schedule Maturities of Certificates of Deposit (Details) $ in Millions	Mar. 31, 2023 USD ($)
Deposits [Abstract]
Three months or less	$ 38
Over three through six months	23
Over six through twelve months	29
Over twelve months	13
Total estimated certificates of deposit that exceeded the FDIC insurance limit	$ 103

No definition available.

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

- Definition

Amount of uninsured time deposit liability. Excludes uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph (f)
-Subparagraph (2)

+ Details

Name:	us-gaap_TimeDepositLiabilityUninsured
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of uninsured time deposit liability with time remaining to mature over six through twelve months. Excludes uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph (f)
-Subparagraph (2)(iii)

+ Details

Name:	us-gaap_TimeDepositLiabilityUninsuredMaturityOverSixMonthsThroughTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of uninsured time deposit liability with time remaining to mature over three through six months. Excludes uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph (f)
-Subparagraph (2)(ii)

+ Details

Name:	us-gaap_TimeDepositLiabilityUninsuredMaturityOverThreeMonthsThroughSixMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of uninsured time deposit liability with time remaining to mature over 12 months. Excludes uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph (f)
-Subparagraph (2)(iv)

+ Details

Name:	us-gaap_TimeDepositLiabilityUninsuredMaturityOverTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of uninsured time deposit liability with time remaining to mature in three months or less. Excludes uninsured time deposit liability in excess of Federal Deposit Insurance Corporation (FDIC) insurance limit or similar state deposit insurance regime in United States of America (US).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1406
-Paragraph (f)
-Subparagraph (2)(i)

+ Details

Name:	us-gaap_TimeDepositLiabilityUninsuredMaturityThreeMonthsOrLess
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant