Benefits - Deferred compensation plan liabilities recognized on balance sheet (Details) - USD ($) $ in Millions	Dec. 01, 2024	Nov. 26, 2023	Nov. 27, 2022
Defined Benefit Plan Disclosure [Line Items]
Accrued salaries, wages and employee benefits	$ 234.2	$ 214.9
Long-term employee related benefits	110.0	102.2
Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Accrued salaries, wages and employee benefits	13.1	9.1	$ 5.6
Long-term employee related benefits	$ 104.8	$ 94.8	$ 94.0

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Name:	us-gaap_EmployeeRelatedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant