|
Derivative Instruments (Details) (USD $)
|
May 31, 2014
|
Feb. 28, 2014
|
Apr. 30, 2012
|
|---|---|---|---|
|
Not designated as hedging instrument [Member] | Foreign currency contracts [Member]
|
|||
| Derivative [Line Items] | |||
| Absolute notional value of derivative instruments | $ 951,700,000 | $ 643,800,000 | |
|
Not designated as hedging instrument [Member] | Interest rate swap contracts [Member]
|
|||
| Derivative [Line Items] | |||
| Absolute notional value of derivative instruments | 1,000,000,000 | 1,000,000,000.0 | 500,000,000.0 |
|
Not designated as hedging instrument [Member] | Commodity swap contracts [Member]
|
|||
| Derivative [Line Items] | |||
| Absolute notional value of derivative instruments | 168,000,000 | 88,000,000 | |
|
Cash flow hedging [Member] | Designated as hedging instrument [Member] | Foreign currency contracts [Member]
|
|||
| Derivative [Line Items] | |||
| Absolute notional value of derivative instruments | 708,000,000 | 636,600,000 | |
|
Cash flow hedging [Member] | Designated as hedging instrument [Member] | Interest rate swap contracts [Member]
|
|||
| Derivative [Line Items] | |||
| Absolute notional value of derivative instruments | $ 500,000,000 | $ 500,000,000 | $ 500,000,000.0 |