|
Schedule of Summary of Derivative Hedges (Detail) (USD $)
In Thousands, unless otherwise specified |
9 Months Ended |
|---|---|
|
Feb. 28, 2014
|
|
|
Derivatives Not Designated As Hedging Instruments | Commodity Contracts
|
|
| Derivative [Line Items] | |
| Notional Amount | $ 24,330 |
|
Derivatives Not Designated As Hedging Instruments | Commodity Contracts | Minimum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2014-03 |
|
Derivatives Not Designated As Hedging Instruments | Commodity Contracts | Maximum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2015-12 |
|
Derivatives Not Designated As Hedging Instruments | Foreign Currency Contracts
|
|
| Derivative [Line Items] | |
| Notional Amount | 10,000 |
| Maturity Date(s) | 2014-05 |
|
Cash Flow Hedges | Commodity Contracts
|
|
| Derivative [Line Items] | |
| Notional Amount | 28,265 |
|
Cash Flow Hedges | Commodity Contracts | Minimum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2014-03 |
|
Cash Flow Hedges | Commodity Contracts | Maximum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2014-12 |
|
Cash Flow Hedges | Interest Rate Contracts
|
|
| Derivative [Line Items] | |
| Notional Amount | $ 100,000 |
|
Cash Flow Hedges | Interest Rate Contracts | Minimum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2014-06 |
|
Cash Flow Hedges | Interest Rate Contracts | Maximum
|
|
| Derivative [Line Items] | |
| Maturity Date(s) | 2014-12 |