Income Taxes - Narrative (Detail) $ in Millions	12 Months Ended
	Dec. 28, 2018 USD ($) jurisdiction	Dec. 29, 2017 USD ($)
Income Tax Contingency [Line Items]
Increased (decrease) in valuation allowance	$ 34.7	$ 25.0
Pension and other postretirement benefit plans, tax	0.8
Undistributed earnings of foreign subsidiaries	1,496.0
Federal and foreign tax operating loss carry-forwards	1,057.2
Accrual for uncertain tax positions, that, if recognized would affect the effective income tax rate	4.2	4.2
Interest on income taxes accrued	$ 1.3	$ 1.1
Foreign Tax Authority [Member]
Income Tax Contingency [Line Items]
Number of jurisdictions under examination | jurisdiction	2
Estimate of possible loss	$ 141.4