Defined Benefit Pension and Other Postretirement Plans (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Pension and Other Postretirement Plans (Textual) [Abstract]
Net cost to sponsor unfunded and non-qualified supplemental executive retirement plans	$ 0.8	$ 0.7
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution made to Pension Plan	5.7	4.1
Expected contribution to pensions plans during remainder of fiscal year	$ 10.0

The increase in the fair value of plan assets from contributions made by the employer.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)(3)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration