Assets Held For Sale (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Jan. 31, 2015	Jan. 31, 2015	Nov. 01, 2014
Assets Held-for-sale, Not Part of Disposal Group, Current [Abstract]
Carrying value for vacant land held for sale	$ 16.8us-gaap_LandAvailableForSale	$ 16.8us-gaap_LandAvailableForSale	$ 20.0us-gaap_LandAvailableForSale
Additional impairment charges	$ 3.2	$ 5.4

Carrying value of land held for sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.(a),1(d))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2599-110228

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph d

-Article 7

Name:	us-gaap_LandAvailableForSale
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant