Earnings Per Share Earnings Per Share (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 11, 2017	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 554.0	$ 0.0	$ 0.0
RB Foods [Member]
Class of Stock [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	6,350,000.00
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	800,000.0