Benefits - Benefit obligations in excess of fair value of plan assets (Details) - USD ($) $ in Millions		12 Months Ended
	May 30, 2023	Nov. 26, 2023	Nov. 27, 2022	Nov. 28, 2021
Change in plan assets [Roll Forward]
U.S. pension settlement loss	$ 19.0	$ 19.0	$ 0.0	$ 0.0
Amounts reclassified from accumulated other comprehensive loss		(7.2)	12.3	(30.2)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent
Change in plan assets [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss		21.0
Pension plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year		882.6	1,192.1
Service cost		2.8	3.9	4.5
Interest cost		39.9	22.5	19.3
Plan participants' contribution		0.6	0.5
Actuarial loss (gain)		(38.2)	(251.5)
Impact of foreign currency changes		4.5	(16.1)
Plan settlements		(59.1)	(1.1)
Net benefits paid		(63.7)	(67.7)
Benefit obligation at end of year		769.4	882.6	1,192.1
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year		838.5	1,129.2
Actual return on plan assets		7.3	(216.5)
Employer contribution		12.2	10.7
Plan participants' contributions		0.6	0.5
Plan settlements		(59.1)	(1.1)
Impact of foreign currency changes		3.6	(16.6)
Net benefits paid		(63.7)	(67.7)
Fair value of plan assets at end of year		739.4	838.5	1,129.2
Unfunded status at end of year		(30.0)	(44.1)
Other postretirement benefit plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year		41.9	57.8
Service cost		0.0	0.0	0.0
Interest cost		2.0	0.9	0.8
Plan participants' contribution		3.5	3.6
Actuarial loss (gain)		1.0	(10.2)
Impact of foreign currency changes		0.0	0.0
Plan settlements		0.0	0.0
Net benefits paid		(9.2)	(10.2)
Benefit obligation at end of year		39.2	41.9	57.8
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year		0.0	0.0
Actual return on plan assets		0.0	0.0
Employer contribution		5.7	6.6
Plan participants' contributions		3.5	3.6
Plan settlements		0.0	0.0
Impact of foreign currency changes		0.0	0.0
Net benefits paid		(9.2)	(10.2)
Fair value of plan assets at end of year		0.0	0.0	$ 0.0
Unfunded status at end of year		$ (39.2)	$ (41.9)