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Summary of Significant Accounting Policies - Accounts Payable and Other Current Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounting Policies [Abstract] |  |
Trade accounts payable | $ 511 | $ 449
Client deposits | 985 | 931
Transferable federal tax credits (see Note 17) | 866 | 804
Accrued compensation and benefits | 296 | 344
Accrued taxes | 261 | 203
Accrued interest | 335 | 298
Accrued payment network fees | 253 | 232
Operating lease liabilities | 116 | 118
Accrued professional fees | 102 | 96
Obligation to purchase redeemable noncontrolling interest (see Note 13) | 95 | 0
Other accrued expenses | 979 | 880
Total | $ 4,799 | $ 4,355

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