Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Trade accounts payable	$ 540	$ 449
Client deposits	950	931
Transferrable federal tax credits	307	804
Accrued compensation and benefits	289	344
Accrued taxes	205	203
Accrued interest	222	298
Accrued payment network fees	250	232
Operating lease liabilities	114	118
Accrued professional fees	103	96
Other accrued expenses	977	880
Total	$ 3,957	$ 4,355