Basis of Presentation and Summary of Significant Accounting Policies - Cash and Cash equivalents (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Cash and cash equivalents	$ 573	$ 722	$ 241
Long term restricted cash	3		1
Cash included in settlement processing assets	32		22
Total cash, cash equivalents and restricted cash of continuing operations	608		264
Cash, cash equivalents and restricted cash of discontinued operations	0		5
Total cash, cash equivalents and restricted cash	$ 608	$ 758	$ 269	$ 285