COLLATERALIZED ARRANGEMENTS AND FINANCING - Crypto Borrowings (Details) $ in Thousands	Sep. 30, 2026 USD ($) unit	Dec. 31, 2025 USD ($) unit
Crypto Asset, Holding [Line Items]
Total short-term borrowings	$ 748,778	$ 452,105
Crypto Asset Holdings
Crypto Asset, Holding [Line Items]
Cost Basis	349,063	363,705
Fair Value	407,255	332,182
Total short-term borrowings	748,778	452,105
Payment stablecoins \| Crypto Asset Holdings
Crypto Asset, Holding [Line Items]
Fair Value	$ 341,523	$ 119,923
Bitcoin \| Crypto Asset Holdings
Crypto Asset, Holding [Line Items]
Units \| unit	835	2,035
Cost Basis	$ 66,471	$ 183,882
Fair Value	$ 69,734	$ 178,022
Ethereum \| Crypto Asset Holdings
Crypto Asset, Holding [Line Items]
Units \| unit	71,542	43,941
Cost Basis	$ 174,060	$ 150,424
Fair Value	192,014	130,363
Other crypto assets \| Crypto Asset Holdings
Crypto Asset, Holding [Line Items]
Cost Basis	108,532	29,399
Fair Value	$ 145,507	$ 23,797

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-8

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481372/852-10-55-10

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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