v3.22.0.1
Summary of Significant Accounting Policies (Supplemental Cash Flows) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accounting Policies [Abstract]      
Interest Paid, Excluding Capitalized Interest, Operating Activities $ 185 $ 408 $ 851
Income Taxes Paid, Net 367 132 85
Real Estate Owned, Transfer to Real Estate Owned 14 31 63
Transfer of Portfolio Loans and Leases to Held-for-sale 240 275 66
Transfer of Loans Held-for-sale to Portfolio Loans 277 1 3
Properties Transferred To Held For Sale $ 38 $ 33 $ 62