Capital Stock, Earnings Per Share And Stock Issuance Capital Stock, Earnings Per Share And Stock Issuance (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 11, 2017	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Class of Stock [Line Items]
Maximum percentage of votes a holder of shares of Common Stock may cast out of the votes entitled to be cast by all holders of shares of Common Stock		10.00%
Stock repurchase program, authorized amount		$ 0.0	$ 0.0	$ 554.0
Minimum [Member]
Class of Stock [Line Items]
Minimum percentage a holder must acquire of each class of common stock not to be subject to our redemption rights		90.00%
Minimum percentage of votes a holder must control out of the votes entitled to be cast by all holders of shares of Common Stock to trigger the automatic conversion, on a share-for-share basis, of all shares of Common Stock Non-Voting into shares of Common Stock		50.00%
RB Foods [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	6,350,000
Stock repurchase program, authorized amount	$ 554.0
Over-Allotment Option [Member] | RB Foods [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	800,000