Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred Tax Assets, Gross [Abstract]
Tax credit carryforwards	$ 1,014	$ 1,786
Adjustments to loan value	920	923
U.S. federal tax loss carryforwards	256	0
State and local taxes	233	191
Other	604	366
Gross deferred tax assets	3,027	3,266
Valuation allowance	(839)	(835)
Deferred tax assets, net of valuation allowance	2,188	2,431
Deferred Tax Liabilities, Gross [Abstract]
Lease transactions	1,385	1,809
Deferred acquisition costs	403	391
Other	156	229
Gross deferred tax liabilities	1,944	2,429
Net deferred tax assets	244	2
Net deferred tax assets	254	94
Net deferred tax liabilities	$ 10	$ 92