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Finance Receivables and Loans, Net - Schedule of Loan Modifications (Details)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
loan
Sep. 30, 2024
USD ($)
Sep. 30, 2023
USD ($)
loan
Sep. 30, 2024
USD ($)
loan
Dec. 31, 2023
USD ($)
Financing Receivable, Troubled Debt Restructuring            
Trial modifications, term     3 months      
Trial modifications, amount $ 3   $ 3   $ 3 $ 5
Total 217 $ 106 $ 556 $ 269    
Percentage of total     0.40% 0.20%    
Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0 37 $ 5 $ 65    
Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 156 63 481 149    
Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 3 1 5 13    
Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total 43 4 50 9    
Combination            
Financing Receivable, Troubled Debt Restructuring            
Total 15 1 15 33    
Consumer            
Financing Receivable, Troubled Debt Restructuring            
Total 140 69 325 157 441  
Consumer | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   64   134 330  
Consumer | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   3   10 70  
Consumer | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   4 26  
Consumer | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   2   9 15  
Consumer | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Consumer | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 131 63 307 102    
Consumer | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 3 1 5 13    
Consumer | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total 6 4 13 9    
Consumer | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total 0 1 0 33    
Consumer | Automotive            
Financing Receivable, Troubled Debt Restructuring            
Total 132 $ 63 309 $ 142 $ 421  
Number of loans redefaulted | loan   67   108 1,205  
Amortized cost of loans redefaulted   $ 1   $ 3 $ 29  
Consumer | Automotive | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   60   125 317  
Consumer | Automotive | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   2   9 67  
Consumer | Automotive | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   3 25  
Consumer | Automotive | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   5 12  
Consumer | Automotive | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Number of months extended/deferred 30 months 28 months 29 months 27 months    
Consumer | Automotive | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 130 $ 62 $ 305 $ 99 416  
Consumer | Automotive | Contractual maturity extensions | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   60   89 316  
Consumer | Automotive | Contractual maturity extensions | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   2   7 67  
Consumer | Automotive | Contractual maturity extensions | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   2 25  
Consumer | Automotive | Contractual maturity extensions | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   1 8  
Consumer | Automotive | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 2 1 4 13 4  
Principal forgiveness, amount forgiven 1 0 1 2    
Consumer | Automotive | Principal forgiveness | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   0   8 0  
Consumer | Automotive | Principal forgiveness | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   1 0  
Consumer | Automotive | Principal forgiveness | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Automotive | Principal forgiveness | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   4 4  
Consumer | Automotive | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Consumer | Automotive | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 30 1  
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 10.40%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 9.70%    
Payment extensions, initial term       75 months    
Payment extensions, revised term       85 months    
Consumer | Automotive | Combination | Current            
Financing Receivable, Troubled Debt Restructuring            
Total       $ 28 1  
Consumer | Automotive | Combination | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       1 0  
Consumer | Automotive | Combination | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       1 0  
Consumer | Automotive | Combination | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0 0  
Consumer | Consumer mortgage            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1 $ 2 $ 2 $ 6 4  
Number of loans redefaulted | loan       1    
Amortized cost of loans redefaulted       $ 2    
Consumer | Consumer mortgage | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   2   4 3  
Consumer | Consumer mortgage | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 1  
Consumer | Consumer mortgage | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Consumer mortgage | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   2 0  
Consumer | Consumer mortgage | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Number of months extended/deferred 126 months 210 months 176 months 149 months    
Consumer | Consumer mortgage | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1 $ 1 $ 2 $ 3    
Consumer | Consumer mortgage | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Principal forgiveness, amount forgiven 0 0 0 0    
Consumer | Consumer mortgage | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Consumer | Consumer mortgage | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 1 $ 0 $ 3    
Interest rate concessions, initial rate 0.00% 2.50% 0.00% 4.30%    
Interest rate concessions, revised rate 0.00% 2.00% 0.00% 3.10%    
Payment extensions, initial term   180 months   284 months    
Payment extensions, revised term   280 months   435 months    
Consumer | Mortgage Finance            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1 $ 1 $ 2 $ 4 3  
Consumer | Mortgage Finance | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   1   2 2  
Consumer | Mortgage Finance | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 1  
Consumer | Mortgage Finance | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage Finance | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   2 0  
Consumer | Mortgage Finance | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Number of months extended/deferred 126 months 210 months 176 months 186 months    
Consumer | Mortgage Finance | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1 $ 1 $ 2 $ 2 3  
Consumer | Mortgage Finance | Contractual maturity extensions | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   1   2 2  
Consumer | Mortgage Finance | Contractual maturity extensions | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 1  
Consumer | Mortgage Finance | Contractual maturity extensions | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage Finance | Contractual maturity extensions | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage Finance | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Principal forgiveness, amount forgiven 0 0 0 0    
Consumer | Mortgage Finance | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Consumer | Mortgage Finance | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 2    
Number of months extended/deferred       210 months    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 4.60%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 3.40%    
Payment extensions, initial term       309 months    
Payment extensions, revised term       470 months    
Consumer | Mortgage Finance | Combination | Current            
Financing Receivable, Troubled Debt Restructuring            
Total       $ 0    
Consumer | Mortgage Finance | Combination | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0    
Consumer | Mortgage Finance | Combination | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0    
Consumer | Mortgage Finance | Combination | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       2    
Consumer | Mortgage — Legacy            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 1   2 1  
Consumer | Mortgage — Legacy | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   1   2 1  
Consumer | Mortgage — Legacy | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage — Legacy | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage — Legacy | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage — Legacy | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total   0   $ 0    
Number of months extended/deferred       76 months    
Consumer | Mortgage — Legacy | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total   0   $ 1    
Consumer | Mortgage — Legacy | Contractual maturity extensions | Current            
Financing Receivable, Troubled Debt Restructuring            
Total       1    
Consumer | Mortgage — Legacy | Contractual maturity extensions | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0    
Consumer | Mortgage — Legacy | Contractual maturity extensions | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0    
Consumer | Mortgage — Legacy | Contractual maturity extensions | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total       0    
Consumer | Mortgage — Legacy | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0    
Principal forgiveness, amount forgiven   0   0    
Consumer | Mortgage — Legacy | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 0   $ 0    
Interest rate concessions, initial rate   0.00%   0.00%    
Interest rate concessions, revised rate   0.00%   0.00%    
Consumer | Mortgage — Legacy | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 1   $ 1 1  
Interest rate concessions, initial rate   2.50%   2.70%    
Interest rate concessions, revised rate   2.00%   2.00%    
Payment extensions, initial term   180 months   174 months    
Payment extensions, revised term   280 months   283 months    
Consumer | Mortgage — Legacy | Combination | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 1   $ 1 1  
Consumer | Mortgage — Legacy | Combination | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage — Legacy | Combination | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Mortgage — Legacy | Combination | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0 0  
Consumer | Other            
Financing Receivable, Troubled Debt Restructuring            
Total $ 7 4 $ 14 9 16  
Consumer | Other | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   2   5 10  
Consumer | Other | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   1 2  
Consumer | Other | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   1 1  
Consumer | Other | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   2 3  
Consumer | Other | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Consumer | Other | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Consumer | Other | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 1 0 1 0    
Principal forgiveness, amount forgiven 1 0 1 0    
Consumer | Other | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 6 $ 4 $ 13 $ 9    
Interest rate concessions, initial rate 30.40% 30.00% 30.40% 30.00%    
Interest rate concessions, revised rate 10.40% 11.00% 7.90% 8.00%    
Consumer | Other | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Consumer | Credit Card            
Financing Receivable, Troubled Debt Restructuring            
Total $ 7 $ 4 $ 14 $ 9    
Consumer | Credit Card | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Consumer | Credit Card | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Consumer | Credit Card | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 1 0 1 0    
Principal forgiveness, amount forgiven 1 0 1 0    
Consumer | Credit Card | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 6 $ 4 $ 13 $ 9 16  
Interest rate concessions, initial rate 30.40% 30.00% 30.40% 30.00%    
Interest rate concessions, revised rate 10.40% 11.00% 7.90% 8.00%    
Consumer | Credit Card | Interest rate concessions | Current            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 2   $ 5 10  
Consumer | Credit Card | Interest rate concessions | 30–59 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   1 2  
Consumer | Credit Card | Interest rate concessions | 60–89 days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   0   1 1  
Consumer | Credit Card | Interest rate concessions | 90 or more days past due            
Financing Receivable, Troubled Debt Restructuring            
Total   1   2 3  
Consumer | Credit Card | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Commercial            
Financing Receivable, Troubled Debt Restructuring            
Total $ 77 $ 37 $ 231 $ 112 231  
Commercial | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total   0   34 118  
Commercial | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total   0   7 0  
Commercial | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total   0   6 112  
Commercial | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total   37   65 1  
Commercial | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 37 $ 5 $ 65    
Number of months extended/deferred 15 months 3 months 36 months 13 months    
Commercial | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 25 $ 0 $ 174 $ 47    
Commercial | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0 0 0 0    
Principal forgiveness, amount forgiven 0 0 0 0    
Commercial | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 37 $ 0 $ 37 $ 0    
Interest rate concessions, initial rate 11.00% 0.00% 11.00% 0.00%    
Interest rate concessions, revised rate 7.90% 0.00% 7.90% 0.00%    
Commercial | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 15 $ 0 $ 15 $ 0    
Interest rate concessions, initial rate 5.70% 0.00% 5.70% 0.00%    
Interest rate concessions, revised rate 4.30% 0.00% 4.30% 0.00%    
Payment extensions, initial term 7 months   7 months      
Payment extensions, revised term 61 months   61 months      
Commercial | Automotive            
Financing Receivable, Troubled Debt Restructuring            
Total $ 37   $ 42      
Commercial | Automotive | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0   $ 5   5  
Number of months extended/deferred     10 months      
Commercial | Automotive | Payment deferrals | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Payment deferrals | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Payment deferrals | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total         5  
Commercial | Automotive | Payment deferrals | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 0   $ 0      
Commercial | Automotive | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0   0      
Principal forgiveness, amount forgiven 0   0      
Commercial | Automotive | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 37   $ 37   37  
Interest rate concessions, initial rate 11.00%   11.00%      
Interest rate concessions, revised rate 7.90%   7.90%      
Commercial | Automotive | Interest rate concessions | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Interest rate concessions | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Interest rate concessions | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total         37  
Commercial | Automotive | Interest rate concessions | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Automotive | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0   $ 0      
Interest rate concessions, initial rate 0.00%   0.00%      
Interest rate concessions, revised rate 0.00%   0.00%      
Commercial | Other            
Financing Receivable, Troubled Debt Restructuring            
Total $ 39 $ 37 $ 188 $ 112    
Commercial | Other | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 37 $ 0 $ 65    
Number of months extended/deferred 15 months 3 months 37 months 13 months    
Commercial | Other | Payment deferrals | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total   $ 0   $ 0    
Commercial | Other | Payment deferrals | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0    
Commercial | Other | Payment deferrals | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total   0   0    
Commercial | Other | Payment deferrals | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total   37   65    
Commercial | Other | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 25 $ 0 $ 174 $ 47 174  
Commercial | Other | Contractual maturity extensions | Corporate Finance operations            
Financing Receivable, Troubled Debt Restructuring            
Number of months extended/deferred   3 months   3 months    
Commercial | Other | Contractual maturity extensions | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total       $ 34 118  
Commercial | Other | Contractual maturity extensions | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total       7 0  
Commercial | Other | Contractual maturity extensions | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total       6 56  
Commercial | Other | Contractual maturity extensions | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total       0 0  
Commercial | Other | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0 $ 0 0 0    
Principal forgiveness, amount forgiven 0 0 0 0    
Commercial | Other | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0 $ 0 $ 0 $ 0    
Interest rate concessions, initial rate 0.00% 0.00% 0.00% 0.00%    
Interest rate concessions, revised rate 0.00% 0.00% 0.00% 0.00%    
Commercial | Other | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 14 $ 0 $ 14 $ 0 14  
Interest rate concessions, initial rate 5.50% 0.00% 5.50% 0.00%    
Interest rate concessions, revised rate 4.30% 0.00% 4.30% 0.00%    
Payment extensions, initial term 4 months   4 months      
Payment extensions, revised term 60 months   60 months      
Commercial | Other | Combination | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Other | Combination | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Other | Combination | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total         14  
Commercial | Other | Combination | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Commercial real estate            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1   $ 1      
Commercial | Commercial real estate | Payment deferrals            
Financing Receivable, Troubled Debt Restructuring            
Total 0   0      
Commercial | Commercial real estate | Contractual maturity extensions            
Financing Receivable, Troubled Debt Restructuring            
Total 0   0      
Commercial | Commercial real estate | Principal forgiveness            
Financing Receivable, Troubled Debt Restructuring            
Total 0   0      
Principal forgiveness, amount forgiven 0   0      
Commercial | Commercial real estate | Interest rate concessions            
Financing Receivable, Troubled Debt Restructuring            
Total $ 0   $ 0      
Interest rate concessions, initial rate 0.00%   0.00%      
Interest rate concessions, revised rate 0.00%   0.00%      
Commercial | Commercial real estate | Combination            
Financing Receivable, Troubled Debt Restructuring            
Total $ 1   $ 1   1  
Interest rate concessions, initial rate 11.00%   11.00%      
Interest rate concessions, revised rate 6.00%   6.00%      
Payment extensions, initial term 84 months   84 months      
Payment extensions, revised term 90 months   90 months      
Commercial | Commercial real estate | Combination | Pass            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Commercial real estate | Combination | Special mention            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Commercial real estate | Combination | Substandard            
Financing Receivable, Troubled Debt Restructuring            
Total         0  
Commercial | Commercial real estate | Combination | Doubtful            
Financing Receivable, Troubled Debt Restructuring            
Total         $ 1