Inventories (Narratives) (Details)	Sep. 30, 2012	Sep. 30, 2011
Inventory Disclosure [Abstract]
Percentage of LIFO Inventory	35.60%	42.90%

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

No definition available.

Name:	us-gaap_PercentageOfLIFOInventory
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant