Income Taxes - Reconciliation of Income Tax Expense, Net of Federal Income Tax Rate (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Income taxes at U.S. statutory rates of 21%, 35% and 35%	$ 47.7	$ (3.7)	$ 38.7
State income taxes, net of federal income tax	2.8	(4.2)	(6.1)
Adjustments for uncertain tax positions	(1.4)	0.4	0.2
Change in valuation allowance	3.3	3.0	2.0
Change in state tax rates	1.9	0.1	(0.1)
Effective Income Tax Rate Reconciliation Transition Tax Due To TCJA	(0.1)	58.1	0.0
Effective Income Tax Rate Reconciliation Remeasurement of Deferred Taxes Due To TCJA	0.0	(52.5)	0.0
Global Intangible Low Tax Income Tax	3.7	0.0	0.0
Foreign Derived Intangible Income Tax Credit	(6.8)	0.0	0.0
Effective Income Tax Rate Reconciliation Deferred Tax On Future Dividends Due To TCJA	(0.9)	3.0	0.0
Permanent adjustments and non-deductible expenses	(9.6)	(0.6)	1.9
Other	0.5	4.1	0.6
Total provision for income taxes	27.1	(9.9)	23.0
CAYMAN ISLANDS
Income Taxes [Line Items]
(Nontaxable earnings) non-deductible losses of foreign affiliates:	0.0	(3.5)	(0.4)
HONG KONG
Income Taxes [Line Items]
Foreign earnings taxed at rates different from the U.S. statutory rate:	(10.8)	(17.3)	(17.3)
OTHER JURISDICTIONS
Income Taxes [Line Items]
(Nontaxable earnings) non-deductible losses of foreign affiliates:	(0.1)	(0.3)	0.2
Foreign earnings taxed at rates different from the U.S. statutory rate:	$ (3.1)	$ 3.5	$ 3.3