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Collateralized Transactions (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Securities received as collateral:
Securities borrowed	$ 3,005,737	$ 2,222,054
Securities purchased under agreements to resell	1,265,955	983,753
Securities received as collateral	4,271,692	3,205,807
Pledged
Securities received as collateral:
Financial instruments owned	2,507,284	2,282,637
Equities | Pledged
Securities received as collateral:
Financial instruments owned	2,500,017	2,269,299
Exchange traded notes | Pledged
Securities received as collateral:
Financial instruments owned	$ 7,267	$ 13,338

X

- Definition

The total of collateralized agreements including securities purchased under agreements to resell (repos), borrowed securities, and secured demand notes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 860
-SubTopic 10
-Section 05
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481472/860-10-05-16

+ Details

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X

- Definition

The fair value of federal funds sold and securities purchased under agreements to resell that serve as collateral for borrowings.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A

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X

- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 940
-SubTopic 320
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479035/940-320-45-2

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- References

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- Definition

Amount, after the effects of master netting arrangements, of securities borrowed from entities in exchange for collateral. Includes assets not subject to a master netting arrangement and not elected to be offset, at market value.

+ References

No definition available.

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