Income Taxes (Deferred Income Tax Assets and Liabilities) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 28, 2012	Dec. 30, 2011
Current:
Allowances and other accrued liabilities	$ (1.4)	$ (2.5)
Inventories	(14.5)	(13.2)
Total current tax liabilities	(15.9)	(15.7)
Noncurrent:
Property, plant and equipment	(69.8)	(72.0)
Equity in earnings of unconsolidated companies	(0.2)	0.2
Pension	(2.4)	(2.7)
Other noncurrent liabilities	(5.3)	(5.1)
Total noncurrent deferred tax liabilities	(77.7)	(79.6)
Total current and noncurrent deferred tax liabilities	(93.6)	(95.3)
Current:
Net operating loss carryforwards	4.3	6.0
Allowances and other accrued assets	13.0	22.1
Inventories	5.0	2.9
Total current deferred tax assets	22.3	31.0
Valuation allowance	(10.5)	(18.6)
Total net current deferred tax assets	11.8	12.4
Noncurrent:
Pension liability	22.5	21.6
Property, plant and equipment	4.1	5.5
Post-retirement benefits other than pension	0.8	0.9
Net operating loss carryforwards	168.7	149.6
Capital loss carryover	2.9	2.8
Other noncurrent assets	27.6	32.2
Total noncurrent deferred tax assets	226.6	212.6
Valuation allowance	(170.1)	(155.7)
Total net noncurrent deferred tax assets	56.5	56.9
Total deferred tax assets, net	68.3	69.3
Net deferred tax liabilities	$ (25.3)	$ (26.0)