Retirement and Other Employee Benefits - Roll Forward of AOCI Balances (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 30, 2022	Dec. 31, 2021
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Net gain (loss) during the year	$ (3.1)	$ (2.4)
Pension plans | Foreign Plan
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Net gain (loss) during the year	(1.8)	(1.1)
Pension plans | United States
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Accumulated other comprehensive (loss) gain at beginning of plan year	(7.8)	(9.6)
Amortization of net losses recognized during the year	0.5	0.5
Net gain (loss) during the year	(0.2)	1.3
Currency exchange rate changes	0.0	0.0
Accumulated other comprehensive (loss) gain at end of plan year	(7.5)	(7.8)
Pension plans | United Kingdom
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Accumulated other comprehensive (loss) gain at beginning of plan year	0.8	(7.4)
Amortization of net losses recognized during the year	0.1	0.1
Net gain (loss) during the year	(9.1)	8.7
Currency exchange rate changes	(0.2)	(0.6)
Accumulated other comprehensive (loss) gain at end of plan year	(8.4)	0.8
Post-retirement plans | Central America
(Decrease) Increase In Accumulated Other Comprehensive Income Loss Before Tax [Roll Forward]
Accumulated other comprehensive (loss) gain at beginning of plan year	(1.0)	(7.5)
Amortization of net losses recognized during the year	0.1	0.0
Net gain (loss) during the year	3.7	6.6
Currency exchange rate changes	0.0	(0.1)
Accumulated other comprehensive (loss) gain at end of plan year	$ 2.8	$ (1.0)