Organization and Basis of Presentation (Detail) |
6 Months Ended |
|---|---|
|
May 31, 2016
segment
| |
| Debt Instrument [Line Items] | |
| Number of operating segments | 2 |
| 3.875% Convertible Senior Debentures due 2029 [Member] | |
| Debt Instrument [Line Items] | |
| Convertible Senior Debentures, interest rate | 3.875% |