Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	22.90%	21.50%	13.30%	22.60%
CIT Group Inc.
Business Acquisition [Line Items]
Deferred tax liabilities	$ 297		$ 297