Inventories - Narrative (Details) (USD $)
In Millions, unless otherwise specified |
Feb. 28, 2014
|
Aug. 31, 2013
|
Feb. 28, 2013
|
---|---|---|---|
Inventory Disclosure [Abstract] | |||
Percentage of LIFO inventory | 14.00% | 16.00% | 14.00% |
LIFO inventory, difference amount had FIFO inventory valuation method been used | $ 579.4 | $ 652.6 | $ 535.1 |