Income Taxes (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 27, 2013	Dec. 28, 2012
Income Taxes [Line Items]
Increased (decrease) in valuation allowance	$ (0.2)	$ 6.3
Federal and foreign tax operating loss carry-forwards	615.2
Accrual for uncertain tax positions, that, if recognized would affect the effective income tax rate	3.0
Uncertain tax positions, net expense related to interest and penalties	0.2
Interest on income taxes accrued	0.4
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Tax, Portion Attributable to Parent	0.1
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Federal and foreign tax operating loss carry-forwards	$ 5.3