Other (Details) (USD $)	3 Months Ended																12 Months Ended
	Dec. 30, 2012		Sep. 23, 2012		Jun. 24, 2012		Mar. 25, 2012		Dec. 25, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 27, 2011		Dec. 30, 2012		Dec. 25, 2011		Dec. 26, 2010
Other Income and Expenses [Abstract]
Severance costs																	$ 18,100,000		$ 12,900,000		$ 4,500,000
Severance liability	15,900,000								13,100,000								15,900,000		13,100,000
Component of Other Expense, Nonoperating [Line Items]
Other expense	2,620,000	[1]	0	[1]	0	[1]	0	[1]	4,500,000	[2]	0	[2]	0	[2]	0	[2]	2,620,000	[1]	4,500,000	[2]	0
Legal Settlement [Member]
Component of Other Expense, Nonoperating [Line Items]
Other expense	2,600,000																2,600,000
Retirement and Consulting Agreement [Member]
Component of Other Expense, Nonoperating [Line Items]
Other expense									$ 4,500,000										$ 4,500,000

[1] In the fourth quarter of 2012, we recorded a $2.6 million charge in connection with a legal settlement.

[2] In the fourth quarter of 2011, we recorded a $4.5 million charge for a retirement and consulting agreement in connection with the retirement of our former chief executive officer.