Impact of New Accounting Pronouncements Impact of New Accounting Pronouncements (Narrative) (Details)	Jul. 30, 2016
Accounting Changes and Error Corrections [Abstract]
Percentage of LIFO Inventory	95.00%

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