Employee Incentive Compensation Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 26, 2017	Nov. 27, 2016	Nov. 29, 2015
Annual Incentive Plan (AIP) [Member]
Schedule of Employee Incentive Compensation Plans Disclosures [Line Items]
EICP Compensation expense (benefit)	$ 88.0	$ 68.3	$ 65.7
EICP Accrued liabilities	85.4	68.5
2005 Long-Term Incentive Plan (LTIP) [Member]
Schedule of Employee Incentive Compensation Plans Disclosures [Line Items]
EICP Compensation expense (benefit)	4.5	4.9	$ 4.3
EICP Accrued liabilities	$ 10.6	$ 10.2
ECIP Duration of performace prior to performance measurement	3 years