Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 388	$ 331
Accumulated Amortization	(194)	(175)
Net Carrying Amount	194	156
Core deposit intangibles
Finite-Lived Intangible Assets
Gross Carrying Amount	229	229
Accumulated Amortization	(168)	(153)
Net Carrying Amount	61	76
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	106	62
Accumulated Amortization	(8)	(3)
Net Carrying Amount	98	59
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	30	25
Accumulated Amortization	(6)	(7)
Net Carrying Amount	24	18
Operating leases
Finite-Lived Intangible Assets
Gross Carrying Amount	9	11
Accumulated Amortization	(8)	(9)
Net Carrying Amount	1	2
Other
Finite-Lived Intangible Assets
Gross Carrying Amount	14	4
Accumulated Amortization	(4)	(3)
Net Carrying Amount	$ 10	$ 1