v3.26.1
Loans - Schedule of Credit Quality Indicators for Term Loans by Origination Year (Detail) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment [Line Items]    
Total $ 263,076 $ 239,882
Percentage of total 100.00% 100.00%
All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 234,391 $ 212,911
Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total 35,564 30,676
Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 176,088 $ 150,972
Percentage of total 74.00% 70.00%
Investment-Grade | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 173,324 $ 149,682
Investment-Grade | Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total 12,172 9,243
Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 52,286 $ 50,278
Percentage of total 21.00% 23.00%
Non-Investment- Grade | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 48,950 $ 47,675
Non-Investment- Grade | Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 23,357 $ 21,432
Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Percentage of total 5.00% 7.00%
Other Metrics/ Unrated | All Classes except Consumer    
Financing Receivable, Recorded Investment [Line Items]    
Total $ 12,117 $ 15,554
Corporate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 3,934 5,993
Year two 4,961 2,268
Year three 2,517 1,428
Year four 1,347 1,518
Year five 1,174 1,831
More than five years 3,204 2,006
Revolving 16,439 14,301
Revolving converted to term 87 87
Total 33,663 29,432
Corporate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,459 2,153
Year two 2,348 623
Year three 1,088 705
Year four 702 680
Year five 471 75
More than five years 472 477
Revolving 5,191 4,419
Revolving converted to term 0 0
Total 11,731 9,132
Corporate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 2,475 3,840
Year two 2,613 1,645
Year three 1,429 723
Year four 645 838
Year five 703 1,756
More than five years 2,732 1,529
Revolving 11,229 9,881
Revolving converted to term 87 87
Total 21,913 20,299
Corporate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
More than five years 0 0
Revolving 19 1
Revolving converted to term 0 0
Total 19 1
Commercial real estate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 4,541 6,406
Year two 6,266 4,711
Year three 3,933 1,566
Year four 1,303 2,084
Year five 1,672 2,120
More than five years 3,532 2,123
Revolving 17,885 16,963
Revolving converted to term 245 288
Total 39,377 36,261
Commercial real estate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 3,081 3,452
Year two 4,292 3,653
Year three 3,086 993
Year four 945 858
Year five 777 390
More than five years 1,445 851
Revolving 15,756 14,440
Revolving converted to term 175 185
Total 29,557 24,822
Commercial real estate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,420 2,866
Year two 1,926 1,058
Year three 847 545
Year four 358 1,225
Year five 895 1,730
More than five years 2,076 1,272
Revolving 2,129 2,523
Revolving converted to term 70 103
Total 9,721 11,322
Commercial real estate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 40 88
Year two 48 0
Year three 0 28
Year four 0 1
Year five 0 0
More than five years 11 0
Revolving 0 0
Revolving converted to term 0 0
Total 99 117
Residential real estate    
Financing Receivable, Recorded Investment [Line Items]    
Year one 4,507 4,208
Year two 4,365 1,561
Year three 1,316 1,245
Year four 1,072 2,494
Year five 2,384 2,542
More than five years 2,684 326
Revolving 16,110 16,324
Total 32,438 28,700
Residential real estate | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 2,239 1,242
Year two 1,233 89
Year three 51 90
Year four 68 86
Year five 85 15
More than five years 9 0
Revolving 14,631 14,624
Total 18,316 16,146
Residential real estate | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 700 274
Year two 265 38
Year three 31 0
Year four 0 41
Year five 41 74
More than five years 86 19
Revolving 1,479 1,700
Total 2,602 2,146
Residential real estate | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,568 2,692
Year two 2,867 1,434
Year three 1,234 1,155
Year four 1,004 2,367
Year five 2,258 2,453
More than five years 2,589 307
Revolving 0 0
Total 11,520 10,408
Securities-based    
Financing Receivable, Recorded Investment [Line Items]    
Year one 373 5
Year two 5 1,788
Year three 1,325 38
Year four 8 5
Year five 5  
Revolving 17,394 16,243
Total 19,110 18,079
Securities-based | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 10 5
Year two 5 1,750
Year three 1,212 38
Year four 8 5
Year five 5  
Revolving 17,035 11,332
Total 18,275 13,130
Securities-based | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 363 0
Year two 0 38
Year three 113 0
Year four 0 0
Year five 0  
Revolving 333 305
Total 809 343
Securities-based | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0  
Revolving 26 4,606
Total 26 4,606
Other collateralized    
Financing Receivable, Recorded Investment [Line Items]    
Year one 9,158 14,674
Year two 14,536 6,117
Year three 5,204 3,183
Year four 2,448 816
Year five 539 1,006
More than five years 1,184 697
Revolving 72,339 70,523
Revolving converted to term 401 503
Total 105,809 97,519
Other collateralized | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 6,708 10,064
Year two 10,600 4,158
Year three 3,330 2,355
Year four 1,620 614
Year five 426 725
More than five years 1,019 590
Revolving 67,958 64,769
Revolving converted to term 377 503
Total 92,038 83,778
Other collateralized | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 2,398 4,475
Year two 3,804 1,881
Year three 1,808 735
Year four 747 178
Year five 95 233
More than five years 82 63
Revolving 4,360 5,754
Revolving converted to term 24 0
Total 13,318 13,319
Other collateralized | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 52 135
Year two 132 78
Year three 66 93
Year four 81 24
Year five 18 48
More than five years 83 44
Revolving 21 0
Revolving converted to term 0 0
Total 453 422
Other    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,331 674
Year two 540 323
Year three 81 92
Year four 80 23
Year five 17 22
More than five years 30 3
Revolving 1,915 1,783
Total 3,994 2,920
Other | Investment-Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 1,146 618
Year two 477 251
Year three 50 81
Year four 80 22
Year five 16 22
More than five years 27 0
Revolving 1,611 1,680
Total 3,407 2,674
Other | Non-Investment- Grade    
Financing Receivable, Recorded Investment [Line Items]    
Year one 185 56
Year two 63 72
Year three 31 11
Year four 0 1
Year five 1 0
More than five years 3 3
Revolving 304 103
Total 587 246
Other | Other Metrics/ Unrated    
Financing Receivable, Recorded Investment [Line Items]    
Year one 0 0
Year two 0 0
Year three 0 0
Year four 0 0
Year five 0 0
More than five years 0 0
Revolving 0 0
Total $ 0 $ 0