Unaudited Quarterly Results Unaudited Quarterly Results 2 (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended					12 Months Ended		3 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2014 Defense	Sep. 30, 2013 Defense	Sep. 30, 2014 Defense
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments	$ 3.8									$ 1.8
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments		9.7	4.1
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments, net of tax		6.2	2.6
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements and Curtailments, net of tax	2.4
Total DoD sales								8.9		8.9
Reduction of Revenue - Contractual Obligations, Net of Tax								(5.6)
Impairment				9.0		9.0
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill), Net of Tax				5.5
Contract Extension, Expense Incurred									3.8
Contract Extension, Expense Incurred, Net of Tax									2.4
Contract Extension Period				5 years		5 years
Unsolicited Tender Offer Costs					16.3	16.3	6.6
Unsolicited Tender Offer Costs, Net of Tax					$ 10.4