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LOANS RECEIVABLE, NET - Summary of Loans Receivable, Net (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	$ 11,022	$ 6,573
Allowance for doubtful accounts	(2,830)	(1,678)	$ (1,612)	$ (1,084)
Loans receivable, net	8,192	4,895
Merchant
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	1,877	1,205
Allowance for doubtful accounts	(668)	(417)	(393)	(256)
Loans receivable, net	1,209	788
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	4,088	2,591
Allowance for doubtful accounts	(1,114)	(696)	(725)	(591)
Loans receivable, net	2,974	1,895
Credit cards
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	4,803	2,639
Allowance for doubtful accounts	(1,032)	(557)	(487)	(236)
Loans receivable, net	3,771	2,082
Asset-backed
Loans and Leases Receivable Disclosure [Line Items]
Loans receivable	254	138
Allowance for doubtful accounts	(16)	(8)	$ (7)	$ (1)
Loans receivable, net	$ 238	$ 130

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