Derivative Financial Instruments Balance Sheet Location (Details) (USD $)	6 Months Ended		12 Months Ended
	Jul. 01, 2012	Jun. 26, 2011	Jul. 01, 2012	Jun. 26, 2011	Dec. 31, 2011	Jul. 01, 2012 Designated As Hedging [Member]	Dec. 31, 2011 Designated As Hedging [Member]	Jun. 26, 2011 Designated As Hedging [Member]	Jul. 01, 2012 Not Designated As Hedging [Member]	Dec. 31, 2011 Not Designated As Hedging [Member]	Jun. 26, 2011 Not Designated As Hedging [Member]	Jul. 01, 2012 Interest Rate Swap [Member] Designated As Hedging [Member]	Dec. 31, 2011 Interest Rate Swap [Member] Designated As Hedging [Member]	Jun. 26, 2011 Interest Rate Swap [Member] Designated As Hedging [Member]	May 31, 2011 Foreign Currency Swap [Member]	Jul. 01, 2012 September 2010 Swaps [Member] Cash Flow Hedging [Member] Forward-Starting Interest Rate Swap [Member]	Feb. 28, 2011 September 2010 Swaps [Member] Cash Flow Hedging [Member] Forward-Starting Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Payments for (Proceeds from) Derivative Instrument, Financing Activities	$ 50,450,000	$ 0	$ 50,450,000	$ 0
Derivative Liability	35,146,000	16,750,000	35,146,000	16,750,000	32,400,000							35,146,000	(32,400,000)	(16,750,000)
Derivative assets (liabilities), at fair value, net	(35,146,000)	(94,323,000)	(35,146,000)	(94,323,000)	(83,172,000)	(35,146,000)	(32,400,000)	(36,943,000)	0	(50,772,000)	(57,380,000)
Derivatives recorded in accumulated other comprehensive income (loss)																6,300,000	7,200,000
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash FLow Hedges, Unamortization Portion, Effect Net of Tax																3,900,000
Aggregate Term Debt And Senior Notes Subject to Interest Rate Protection Requirement Percentage															75.00%
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Amortizable Portion, Effect Net of Tax																$ 2,400,000