Consolidated Statement Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Non-Controlling Interests [Member]	Nonvoting Common Stock Common Stock
Balance, Shares at Nov. 30, 2017		10.0				121.0
Balance, Value at Nov. 30, 2017	$ 2,570.9	$ 1,672.9	$ 1,166.5	$ (279.5)	$ 11.0
Comprehensive income:
Net income	545.9		545.9
Net income attributable to non-controlling interest	2.0				2.0
Other comprehensive income (loss), net of tax	(9.2)			(8.0)	(1.2)
Currency translation adjustments	(26.4)
Dividends	(68.3)		(68.3)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	16.1	$ 16.1
Shares purchased and retired, Shares		(0.1)				(0.2)
Shares purchased and retired, Value	(40.6)	$ (7.2)	(33.4)
Equal exchange, shares		(0.4)				0.4
Balance, Shares at May. 31, 2018		10.0				121.3
Balance, Value at May. 31, 2018	3,040.3	$ 1,705.3	1,631.6	(308.4)	11.8
Comprehensive income:
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	20.9		20.9	(20.9)
Stock Issued During Period, Shares, New Issues		0.5				0.1
Stock Issued During Period, Value, New Issues	23.5	$ 23.5
Balance, Shares at Feb. 28, 2018		9.9				121.3
Balance, Value at Feb. 28, 2018	3,072.4	$ 1,692.2	1,592.3	(224.3)	12.2
Comprehensive income:
Net income	123.3		123.3
Net income attributable to non-controlling interest	1.1				1.1
Other comprehensive income (loss), net of tax	(85.6)			(84.1)	(1.5)
Currency translation adjustments	(88.4)
Dividends	(68.3)		(68.3)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	11.8	$ 11.8
Shares purchased and retired, Shares		0.0				(0.1)
Shares purchased and retired, Value	(19.1)	$ (3.4)	(15.7)
Equal exchange, shares		(0.1)				0.1
Balance, Shares at May. 31, 2018		10.0				121.3
Balance, Value at May. 31, 2018	3,040.3	$ 1,705.3	1,631.6	(308.4)	11.8
Comprehensive income:
Stock Issued During Period, Shares, New Issues		0.2				0.0
Stock Issued During Period, Value, New Issues	4.7	$ 4.7
Balance, Shares at Nov. 30, 2018		9.6				122.5
Balance, Value at Nov. 30, 2018	3,182.2	$ 1,770.6	1,760.2	(359.9)	11.3
Comprehensive income:
Net income	297.4		297.4
Net income attributable to non-controlling interest	1.2				1.2
Other comprehensive income (loss), net of tax	(23.6)			(22.8)	(0.8)
Currency translation adjustments	(21.9)
Dividends	(75.5)		(75.5)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	22.8	$ 22.8
Shares purchased and retired, Shares		(0.1)				(0.4)
Shares purchased and retired, Value	(73.6)	$ (10.1)	(63.5)
Equal exchange, shares		(0.9)				0.9
Balance, Shares at May. 31, 2019		9.5				123.0
Balance, Value at May. 31, 2019	3,382.6	$ 1,835.0	1,918.6	(382.7)	11.7
Comprehensive income:
Stock Issued During Period, Shares, New Issues		0.9				0.0
Stock Issued During Period, Value, New Issues	51.7	$ 51.7
Balance, Shares at Feb. 28, 2019		9.6				122.4
Balance, Value at Feb. 28, 2019	3,342.7	$ 1,780.5	1,877.9	(327.4)	11.7
Comprehensive income:
Net income	149.4		149.4
Net income attributable to non-controlling interest	0.7				0.7
Other comprehensive income (loss), net of tax	(56.0)			(55.3)	(0.7)
Currency translation adjustments	(58.6)
Dividends	(75.5)		(75.5)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	16.1	$ 16.1
Shares purchased and retired, Shares		(0.1)				(0.2)
Shares purchased and retired, Value	(39.4)	$ (6.2)	(33.2)
Equal exchange, shares		(0.8)				0.8
Balance, Shares at May. 31, 2019		9.5				123.0
Balance, Value at May. 31, 2019	3,382.6	$ 1,835.0	$ 1,918.6	$ (382.7)	$ 11.7
Comprehensive income:
Stock Issued During Period, Shares, New Issues		0.8				0.0
Stock Issued During Period, Value, New Issues	$ 44.6	$ 44.6