Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($)		3 Months Ended		9 Months Ended
		Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Nov. 30, 2019
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment (1)		$ (198,500,000)	$ (308,200,000)	$ (198,500,000)	$ (308,200,000)	$ (266,500,000)
Unrealized gain (loss) on foreign currency exchange contracts		300,000	(800,000)	300,000	(800,000)	0
Unamortized value of settled interest rate swaps		0	400,000	0	400,000	300,000
Pension and other postretirement costs		(231,700,000)	(119,700,000)	(231,700,000)	(119,700,000)	(234,000,000.0)
Accumulated other comprehensive loss		(429,900,000)	(428,300,000)	(429,900,000)	(428,300,000)	(500,200,000)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment from AOCI on derivatives, before tax		(1,300,000)	(700,000)	(1,600,000)	(1,300,000)
Reclassification adjustment from AOCI on derivatives, tax		300,000	100,000	400,000	300,000
Reclassification adjustment from AOCI on derivatives, net of tax		(1,000,000.0)	(600,000)	(1,200,000)	(1,000,000.0)
Amortization adjustment from AOCI, pension and other postretirement benefit plans, for net prior service cost (credit), before tax	[1]	(900,000)	(2,100,000)	(3,000,000.0)	(6,100,000)
Reclassification adjustment from AOCI, pension and other postretirement benefit plans, for net gain (loss), before tax	[1]	3,200,000	800,000	8,500,000	2,200,000
Reclassification adjustment from AOCI, pension and other postretirement benefit plans, before tax		2,300,000	(1,300,000)	5,500,000	(3,900,000)
Reclassification adjustment from AOCI, pension and other postretirement benefit plans, for net (gain) loss, tax		(600,000)	300,000	(1,300,000)	900,000
Reclassification adjustment from AOCI, pension and other postretirement benefit plans, for net (gain) loss, net of tax		1,700,000	(1,000,000.0)	4,200,000	(3,000,000.0)
Other Comprehensive Income, Other, Net of Tax				68,000,000.0
Foreign currency translation adjustment (1)		(198,500,000)	(308,200,000)	(198,500,000)	(308,200,000)	$ (266,500,000)
Interest rate contracts | Cash Flow Hedging | Interest Expense
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment from AOCI on derivatives, before tax		(200,000)	(200,000)	(400,000)	(400,000)
Foreign exchange contracts | Cash Flow Hedging | Cost of Sales
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Reclassification adjustment from AOCI on derivatives, before tax		(1,100,000)	$ (500,000)	(1,200,000)	$ (900,000)
Cross currency contracts
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment (1)		20,700,000		20,700,000
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Foreign currency translation adjustment (1)		$ 20,700,000		$ 20,700,000

[1] This accumulated other comprehensive income (loss) component, including settlement losses, is included in the computation of total pension expense and other postretirement benefits expense (refer to note 6 for additional details).