Long-Term Debt and Capital Lease Obligations (Maturities of Long-Term Debt and Capital Lease Obligations) (Detail) (USD $) In Millions, unless otherwise specified	Dec. 27, 2013		Dec. 28, 2012
Debt Instrument [Line Items]
2014	$ 2.9
2015	0.7
2016	0.2
2017	278.8
Total	282.6
Less: Amounts representing interest	(31.2)	[1]
Total long-term debt and capital lease obligations	251.4		126.2
Less: Current portion	(2.8)		(2.7)
Totals, net of current portion of long-term debt and capital lease obligations	248.6		123.5
Variable interest rate on long-term debt	3.00%
Long-term Debt [Member]
Debt Instrument [Line Items]
2014	2.5
2015	0.5
2016	0
2017	278.8
Total	281.8
Less: Amounts representing interest	(31.1)	[1]
Total long-term debt and capital lease obligations	250.7
Less: Current portion	(2.5)
Totals, net of current portion of long-term debt and capital lease obligations	248.2
Capital Leases [Member]
Debt Instrument [Line Items]
2014	0.4
2015	0.2
2016	0.2
2017	0
Total	0.8
Less: Amounts representing interest	(0.1)	[1]
Total long-term debt and capital lease obligations	0.7
Less: Current portion	(0.3)
Totals, net of current portion of long-term debt and capital lease obligations	$ 0.4

[1] We utilize a variable interest rate on our long-term debt, and for presentation purposes we have used an assumed rate of