Employee Benefit Plans - Benefit obligations in excess of fair value of plan assets (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 27, 2022	Nov. 28, 2021	Nov. 29, 2020
Pension plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year	$ 1,192.1	$ 1,264.6
Service cost	3.9	4.5	$ 4.1
Interest cost	22.5	19.3	30.7
Plan participants' contribution	0.5	0.7
Plan combinations	0.0	2.9
Actuarial loss (gain)	(251.5)	(27.0)
Impact of foreign currency changes	(16.1)	(6.0)
Plan settlements	(1.1)	0.0
Net benefits paid	(67.7)	(66.9)
Benefit obligation at end of year	882.6	1,192.1	1,264.6
Change in plan assets [Roll Forward]
Fair value of plan assets at beginning of year	1,129.2	1,153.3
Actual return on plan assets	(216.5)	33.5
Employer contribution	10.7	11.9
Plan participants' contributions	0.5	0.7
Plan settlements	(1.1)	0.0
Impact of foreign currency changes	(16.6)	(3.3)
Net benefits paid	(67.7)	(66.9)
Fair value of plan assets at end of year	838.5	1,129.2	1,153.3
Unfunded status at end of year	(44.1)	(62.9)
Other postretirement benefit plans, defined benefit [Member]
Change in benefit obligation [Roll Forward]
Benefit obligation at beginning of year	57.8	67.4
Service cost	0.0	0.0	0.0
Interest cost	0.9	0.8	1.7
Plan participants' contribution	3.6	4.0
Plan combinations	0.0	0.0
Actuarial loss (gain)	(10.2)	(3.1)
Impact of foreign currency changes	0.0	0.0
Plan settlements	0.0	0.0
Net benefits paid	(10.2)	(11.3)
Benefit obligation at end of year	41.9	57.8	67.4
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	6.6	7.3
Plan participants' contributions	3.6	4.0
Plan settlements	0.0	0.0
Impact of foreign currency changes	0.0	0.0
Net benefits paid	(10.2)	(11.3)
Fair value of plan assets at end of year	0.0	0.0	$ 0.0
Unfunded status at end of year	$ (41.9)	$ (57.8)