Consolidated Statement Of Shareholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Non-Controlling Interests [Member]	Common Stock Non-Voting [Member] Common Stock [Member]	RB Foods [Member] Common Stock Non-Voting [Member] Common Stock [Member]
Balance, Shares at Nov. 30, 2015		11.7				115.6
Balance, Value at Nov. 30, 2015	$ 1,686.9	$ 1,039.6	$ 1,036.7	$ (406.1)	$ 16.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	472.3		472.3
Net loss attributable to non-controlling interest	(1.3)				(1.3)
Other comprehensive income (loss), net of tax	(110.1)			(108.3)	(1.8)
Dividends	(222.0)		(222.0)
Dividends attributable to non-controlling interest	(0.6)				(0.6)
Stock-based compensation	25.6	$ 25.6
Issuance of common stock non-voting (net of issuance costs of $0.9)	0.0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1.5)				(1.5)
Shares purchased and retired, Shares		(0.2)				(2.5)
Shares purchased and retired, Value	(250.1)	$ (19.9)	(230.2)
Shares issued, Shares		0.6				0.1
Shares issued, Value	38.9	$ 38.9
Equal exchange, shares		(0.7)				0.7
Equal exchange, amount	0.0
Balance, Shares at Nov. 30, 2016		11.4				113.9
Balance, Value at Nov. 30, 2016	1,638.1	$ 1,084.2	1,056.8	(514.4)	11.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	477.4		477.4
Net loss attributable to non-controlling interest	1.6				1.6
Other comprehensive income (loss), net of tax	234.5			234.9	(0.4)
Dividends	(247.0)		(247.0)
Dividends attributable to non-controlling interest	0.0				0.0
Buyout of minority interest			0.6
Stock-based compensation	23.9	23.9
Issuance of common stock non-voting (net of issuance costs of $0.9)	554.0	$ 554.0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1.1)				1.7
Shares purchased and retired, Shares		(0.4)				(1.1)
Shares purchased and retired, Value	(145.1)	$ (23.8)	(121.3)
Stock Issued During Period, Shares, New Issues		0.7				0.1	6.4
Shares issued, Value	34.6	$ 34.6
Equal exchange, shares		(1.7)				1.7
Equal exchange, amount	0.0
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	933.4		933.4
Net loss attributable to non-controlling interest	3.3				3.3
Other comprehensive income (loss), net of tax	(62.1)			(59.5)	(2.6)
Dividends	(280.5)		(280.5)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	20.9		20.9	(20.9)
Dividends attributable to non-controlling interest	0.0				0.0
Buyout of minority interest			(12.4)
Stock-based compensation	25.6	$ 25.6
Issuance of common stock non-voting (net of issuance costs of $0.9)	0.0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(12.8)				(0.4)
Shares purchased and retired, Shares		(0.3)				(0.4)
Shares purchased and retired, Value	(84.5)	$ (16.8)	(67.7)
Stock Issued During Period, Shares, New Issues		1.7				0.1
Shares issued, Value	88.9	$ 88.9
Equal exchange, shares		(1.8)				1.8
Equal exchange, amount	0.0
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