Restructuring and Severance (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Restructuring and severance	$ 1.7	$ 0.3	$ 0.2	$ 1.3	$ 0.6	$ 0.4	$ 3.6	$ 1.0		$ 3.5	$ 5.7	$ 11.1
Payments for Restructuring										4.6	7.7	9.2
2018 restructuring plan [Member]
Restructuring and severance										1.8
Payments for Restructuring										0.8
2017 restructuring plan [Member]
Restructuring and severance										1.7	3.5
2016 restructuring plan [Member]
Restructuring and severance											$ 2.1	$ 5.5
Project Life to Date [Member] | 2017 restructuring plan [Member]
Restructuring and severance										5.2
Payments for Restructuring										5.1
Project Life to Date [Member] | 2016 restructuring plan [Member]
Restructuring and severance										$ 7.6
Minimum [Member] | Scenario, Forecast [Member] | 2018 restructuring plan [Member]
Restructuring and severance									$ 5.0
Minimum [Member] | Scenario, Forecast [Member] | 2017 restructuring plan [Member]
Restructuring and severance									5.0
Maximum [Member] | Scenario, Forecast [Member] | 2018 restructuring plan [Member]
Restructuring and severance									8.0
Maximum [Member] | Scenario, Forecast [Member] | 2017 restructuring plan [Member]
Restructuring and severance									$ 7.0