Income Taxes - Deferred Income Taxes Included in Other Assets in the Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Allowance for loan and lease losses	$ 397	$ 515
Deferred compensation	106	107
Reserve for unfunded commitments	38	36
Reserves	30	40
State net operating loss carryforwards	3	3
State deferred taxes	0	1
Other	202	160
Total deferred tax assets	776	862
Deferred tax liabilities:
Lease financing	553	638
Other comprehensive income	367	779
MSRs and related economic hedges	116	120
Goodwill and intangible assets	68	62
Bank premises and equipment	65	91
Investments in joint ventures and partnership interests	61	58
State deferred taxes	6	0
Other	51	66
Total deferred tax liabilities	1,287	1,814
Total net deferred tax liability	$ (511)	$ (952)