Subsequent Event Subsequent Event (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		12 Months Ended				3 Months Ended
	Nov. 30, 2014	Aug. 31, 2014	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2015	May 31, 2015
Subsequent Event [Line Items]
Special charges	$ 2.9	$ 2.3	$ 5.2	$ 25.0	$ 0
UNITED STATES
Subsequent Event [Line Items]
Special charges	1.1
UNITED STATES | Annual Cost Savings [Member]
Subsequent Event [Line Items]
Special charges			1.2
Scenario, Forecast [Member] | UNITED STATES
Subsequent Event [Line Items]
Special charges						20.0
Scenario, Forecast [Member] | UNITED STATES | Employee Severance [Member]
Subsequent Event [Line Items]
Special charges							13.0
Scenario, Forecast [Member] | UNITED STATES | Annual Cost Savings [Member]
Subsequent Event [Line Items]
Special charges						10.0
Scenario, Forecast [Member] | UNITED STATES | 2016 Estimated Annual Cost Savings [Domain]
Subsequent Event [Line Items]
Special charges						$ 25.0