Collateralized Transactions - Collateral Pledged (Details) - USD ($)
$ in Thousands |
May 31, 2018 |
Nov. 30, 2017 |
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
$ 2,555,701
|
$ 2,843,911
|
| Repurchase Agreements |
17,057,241
|
19,829,249
|
| Obligation To Return Securities Received As Collateral |
|
103
|
| Total |
19,612,942
|
22,673,263
|
| Corporate equity securities |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
2,210,311
|
2,353,798
|
| Repurchase Agreements |
430,084
|
214,413
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
2,640,395
|
2,568,211
|
| Corporate debt securities |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
343,068
|
470,908
|
| Repurchase Agreements |
1,999,524
|
2,336,702
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
2,342,592
|
2,807,610
|
| Mortgage- and asset-backed securities |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
0
|
0
|
| Repurchase Agreements |
3,179,689
|
2,562,268
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
3,179,689
|
2,562,268
|
| U.S. government and federal agency securities |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
2,322
|
19,205
|
| Repurchase Agreements |
7,938,208
|
11,792,534
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
7,940,530
|
11,811,739
|
| Municipal securities |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
0
|
0
|
| Repurchase Agreements |
550,030
|
444,861
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
550,030
|
444,861
|
| Sovereign obligations |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
0
|
0
|
| Repurchase Agreements |
2,419,766
|
2,023,530
|
| Obligation To Return Securities Received As Collateral |
|
103
|
| Total |
2,419,766
|
2,023,633
|
| Loans and other receivables |
|
|
| Transfer Of Certain Financial Assets Accounted For As Secured Borrowings [Line Items] |
|
|
| Securities Lending Arrangements |
0
|
0
|
| Repurchase Agreements |
539,940
|
454,941
|
| Obligation To Return Securities Received As Collateral |
|
0
|
| Total |
$ 539,940
|
$ 454,941
|