Goodwill and Other Intangibles - Schedule of Changes in Intangible Liabilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($)
Finite-lived Intangible Liabilities [Roll Forward]
Balance at January 1	$ 0
Amortization	(8)
Balance at June 30, net of accumulated amortization	44
CIT Group Inc.
Finite-lived Intangible Liabilities [Roll Forward]
Acquired in CIT Merger	$ 52