Supplemental Cash Flow (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021
Cash Payments:
Interest	$ 487	$ 431
Income taxes	124	500
Transfers:
Portfolio loans and leases to loans and leases held for sale	105	414
Loans and leases held for sale to portfolio loans and leases	406	38
Portfolio loans and leases to OREO	5	7
Bank premises and equipment to OREO	22	19
Supplemental Disclosures:
Net additions to lease liabilities under operating leases	102	59
Net additions to lease liabilities under finance leases	$ 29	$ 29

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