Retirement Plans Losses Amortized from Accumulated Other Comprehensive Loss into Net Periodic Benefit Cost (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2014
Other Postretirement Benefit Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	$ (0.7)
Prior service cost (credit)	(1.4)
Total	(2.1)
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial loss (gain)	17.1
Prior service cost (credit)	1.3
Total	$ 18.4

Amount included in accumulated other comprehensive income (AOCI) expected to be recognized as components of net periodic benefit cost for the fiscal year that follows the most recent annual statement of financial position, including gain (loss), prior service cost (credit), and transition asset (obligation).

No definition available.

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