Retirement Plans (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2013 Other Postretirement Benefit Plan, Defined Benefit [Member]	Sep. 30, 2014 CANADA Scenario, Forecast [Member]	Sep. 30, 2014 UNITED STATES Scenario, Forecast [Member]
Defined Benefit Plan, Contributions by Employer							$ 1,000,000	$ 700,000
Defined Benefit Plan, Funded Status of Plan					0.99
Decrease in accumulated other comprehensive loss net of tax	(3,000,000)	2,200,000	(6,000,000)	5,600,000
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments						$ 7,400,000