Long-Term Employee Related Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 26, 2017	Nov. 27, 2016	Nov. 29, 2015
Compensation Related Costs [Abstract]
Deferred compensation plan, interest cost	$ 8.1	$ 2.5	$ 1.9
Deferred compensation plan for executives and outside directors, established January 1, 2003 [Member]
Deferred Compensation Share-based Arrangements, Liability, Classified, Noncurrent, Excluded from the rabbi trust [Line Items]
Total deferred compensation plan liabilities	29.4	23.6
Funds held in grantor's rabbi trust	31.1	27.1
Deferred compensation plan for executives, prior to January 1, 2003 [Member]
Deferred Compensation Share-based Arrangements, Liability, Classified, Noncurrent, Excluded from the rabbi trust [Line Items]
Total deferred compensation plan liabilities	$ 31.8	$ 32.2