Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - TDRs Entered into During the Period (Details)

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Outstanding Loans and Leases - Consumer Real Estate - TDRs Entered into During the Period (Details) - Consumer real estate - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 182 $ 346 $ 497 $ 1,229
Carrying Value $ 152 $ 285 $ 395 $ 991
Pre-Modification Interest Rate 4.48% 4.41% 4.49% 4.30%
Post-Modification Interest Rate 4.44% 4.29% 4.32% 3.94%
Residential Mortgage        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 148 $ 226 $ 368 $ 747
Carrying Value $ 125 $ 195 $ 301 $ 635
Pre-Modification Interest Rate 4.29% 4.27% 4.24% 4.22%
Post-Modification Interest Rate 4.25% 4.12% 4.22% 4.03%
Home Equity        
Financing Receivable, Modifications [Line Items]        
Unpaid Principal Balance $ 34 $ 120 $ 129 $ 482
Carrying Value $ 27 $ 90 $ 94 $ 356
Pre-Modification Interest Rate 5.28% 4.67% 5.19% 4.42%
Post-Modification Interest Rate 5.27% 4.60% 4.60% 3.78%