Loans - Summary of Concentration of Secured and Unsecured Loans (Detail) - USD ($)
$ in Millions |
6 Months Ended |
12 Months Ended |
Jun. 30, 2021 |
Dec. 31, 2020 |
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 133,808
|
$ 119,989
|
| Loans receivable at fair value |
$ 12,516
|
$ 13,625
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 47,814
|
$ 48,659
|
| Loans receivable at fair value |
$ 2,786
|
$ 2,751
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 39,955
|
$ 33,023
|
| Loans receivable at fair value |
$ 7,122
|
$ 7,872
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 19,468
|
$ 20,290
|
| Loans receivable at fair value |
$ 1,677
|
$ 1,961
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 12,218
|
$ 5,750
|
| Loans receivable at fair value |
$ 417
|
$ 494
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Installment [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 3,257
|
$ 3,823
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Credit Card Receivable [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 5,210
|
$ 4,270
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 5,886
|
$ 4,174
|
| Loans receivable at fair value |
$ 514
|
$ 547
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 133,808
|
$ 119,989
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Internally rated loans [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 47,814
|
$ 48,659
|
| Internally rated loans [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
39,955
|
33,023
|
| Internally rated loans [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
19,468
|
20,290
|
| Internally rated loans [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
12,218
|
5,750
|
| Internally rated loans [Member] | Installment [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
3,257
|
3,823
|
| Internally rated loans [Member] | Credit Card Receivable [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
5,210
|
4,270
|
| Internally rated loans [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 5,886
|
$ 4,174
|
| Secured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
84.00%
|
82.00%
|
| Unsecured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
16.00%
|
18.00%
|
| Amortized cost [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 119,311
|
$ 103,565
|
| Amortized cost [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
44,153
|
44,778
|
| Amortized cost [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
32,833
|
25,151
|
| Amortized cost [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
17,321
|
17,096
|
| Amortized cost [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
11,696
|
5,236
|
| Amortized cost [Member] | Credit Card Receivable [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
5,210
|
4,270
|
| Amortized cost [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
4,841
|
3,211
|
| Fair Value [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
12,516
|
13,625
|
| Fair Value [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
2,786
|
2,751
|
| Fair Value [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
7,122
|
7,872
|
| Fair Value [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
1,677
|
1,961
|
| Fair Value [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
417
|
494
|
| Fair Value [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
514
|
547
|
| Fair Value [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
12,516
|
13,625
|
| Held for sale [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
1,981
|
2,799
|
| Held for sale [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
875
|
1,130
|
| Held for sale [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
470
|
1,233
|
| Held for sale [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
105
|
20
|
| Held for sale [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
531
|
416
|
| Held for sale [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
1,981
|
2,799
|
| Loans Receivable [Member] | Amortized cost [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
119,311
|
103,565
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 43,820
|
$ 35,840
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 11,370
|
$ 9,478
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
28,195
|
22,098
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
1,668
|
1,792
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
687
|
636
|
| Loans Receivable [Member] | Investment-Grade [Member] | Internally rated loans [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 1,900
|
$ 1,836
|
| Loans Receivable [Member] | Investment-Grade [Member] | Secured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
86.00%
|
83.00%
|
| Loans Receivable [Member] | Investment-Grade [Member] | Unsecured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
14.00%
|
17.00%
|
| Loans Receivable [Member] | Investment-Grade [Member] | Amortized cost [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 41,387
|
$ 33,532
|
| Loans Receivable [Member] | Investment-Grade [Member] | Fair Value [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
2,323
|
2,084
|
| Loans Receivable [Member] | Investment-Grade [Member] | Held for sale [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
110
|
224
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 71,092
|
$ 66,327
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 35,980
|
$ 38,704
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
5,477
|
5,331
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
16,970
|
17,480
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
10,234
|
3,852
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Internally rated loans [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 2,431
|
$ 960
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Secured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
93.00%
|
90.00%
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Unsecured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
7.00%
|
10.00%
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Amortized cost [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 64,523
|
$ 58,250
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Fair Value [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
5,306
|
5,925
|
| Loans Receivable [Member] | Non-Investment-Grade [Member] | Held for sale [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
1,263
|
2,152
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 18,896
|
$ 17,822
|
| Concentration Risk,Percentage |
100.00%
|
100.00%
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Corporate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 464
|
$ 477
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Wealth management [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
6,283
|
5,594
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Commercial real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
830
|
1,018
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Residential real estate [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
1,297
|
1,262
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Installment [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
3,257
|
3,823
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Credit Card Receivable [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
5,210
|
4,270
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Internally rated loans [Member] | Other [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 1,555
|
$ 1,378
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Secured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
47.00%
|
46.00%
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Unsecured Loans [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Concentration Risk,Percentage |
53.00%
|
54.00%
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Amortized cost [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans and Leases Receivable, Gross |
$ 13,401
|
$ 11,783
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Fair Value [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans receivable at fair value |
4,887
|
5,616
|
| Loans Receivable [Member] | Other Metrics/Unrated [Member] | Held for sale [Member] | Internally rated loans [Member] |
|
|
| Financing Receivable, Recorded Investment [Line Items] |
|
|
| Loans Receivable Held-for-sale, Amount |
$ 608
|
$ 423
|