Securitization Activities - Summary of Retained Interests in SPEs (Detail) - USD ($)
$ in Millions |
May 31, 2016 |
Nov. 30, 2015 |
| Schedule of Trading Securities and Other Trading Assets [Line Items] |
|
|
| Total RMBS securitization assets |
$ 16,082.4
|
$ 10,901.9
|
| Total CMBS securitization assets |
3,159.2
|
2,313.4
|
| Total Collateralized loan obligations |
4,219.9
|
4,538.4
|
| Consumer and other loans |
757.1
|
655.0
|
| U.S. government agency residential mortgage-backed securities [Member] |
|
|
| Schedule of Trading Securities and Other Trading Assets [Line Items] |
|
|
| Retained Interests |
76.0
|
203.6
|
| U.S. government agency commercial mortgage-backed securities [Member] |
|
|
| Schedule of Trading Securities and Other Trading Assets [Line Items] |
|
|
| Retained Interests |
19.0
|
87.2
|
| Collateralized loan obligations [Member] |
|
|
| Schedule of Trading Securities and Other Trading Assets [Line Items] |
|
|
| Retained Interests |
50.9
|
51.5
|
| Consumer and other loans [Member] |
|
|
| Schedule of Trading Securities and Other Trading Assets [Line Items] |
|
|
| Retained Interests |
$ 33.8
|
$ 31.0
|