Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 387	$ 331
Accumulated Amortization	(206)	(175)
Net Carrying Amount	181	156
Core deposit intangibles
Finite-Lived Intangible Assets
Gross Carrying Amount	229	229
Accumulated Amortization	(175)	(153)
Net Carrying Amount	54	76
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	106	62
Accumulated Amortization	(12)	(3)
Net Carrying Amount	94	59
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	30	25
Accumulated Amortization	(7)	(7)
Net Carrying Amount	23	18
Operating leases
Finite-Lived Intangible Assets
Gross Carrying Amount	8	11
Accumulated Amortization	(7)	(9)
Net Carrying Amount	1	2
Other
Finite-Lived Intangible Assets
Gross Carrying Amount	14	4
Accumulated Amortization	(5)	(3)
Net Carrying Amount	$ 9	$ 1