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Loans and Merchant Cash Advances - Schedule of MCA, Loans and Related Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and merchant cash advances, net	$ 2,097	$ 1,784
Interest receivable	35	24
Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	1,895	1,621
Allowance for credit losses related to uncollectible receivable	(182)	(160)	$ (129)	$ (110)
Merchant cash advances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables, gross	422	358
Allowance for credit losses related to uncollectible receivable	$ (38)	$ (35)	$ (33)	$ (31)