Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 24, 2011	Jun. 25, 2011	Mar. 26, 2011	Dec. 25, 2010	Sep. 25, 2010	Jun. 30, 2012	Jun. 25, 2011	Jun. 26, 2010
Changes in components of OCI, net of taxes
Net income	$ 110,634	$ 54,517	$ 88,130	$ 133,446	$ 125,593	$ 136,276	$ 109,590	$ 117,550	$ 386,727	$ 489,009	$ 125,139
Actuarial gain (loss) on post-retirement benefits, net of tax benefit (expense) of $1,788 in 2012, $(132) in 2011, and $515 in 2010									(2,603)	(289)	(896)
Deferred tax on unrealized exchange gain (loss) on intercompany receivables									1,612	(2,369)	(1,893)
Change in unrealized gains (losses) on investments, net of tax benefits (expense) of $74 in 2012, $(189) in 2011, and $770 in 2010									(129)	331	(1,346)
Change in unrealized gains (losses) on forward exchange contracts, net of tax benefit (expense) of $26 in 2012, $(1) in 2011, and $85 in 2010									(46)	0	(150)
Total Comprehensive Income									385,561	486,682	120,854
Components of accumulated other comprehensive loss
Deferred Tax on Unrealized Exchange Gains on Long Term Intercompany Receivables	(6,469)				(8,081)				(6,469)	(8,081)
Unrealized components of post-retirement benefits	(7,444)				(4,841)				(7,444)	(4,841)
Cumulative translation adjustment	(1,527)				(1,527)				(1,527)	(1,527)
Net unrealized gain (loss) on cash flow hedges	(196)				(150)				(196)	(150)
Net unrealized gain on available-for-sale securities	202				331				202	331
Accumulated Other Comprehensive Loss	$ (15,434)				$ (14,268)				$ (15,434)	$ (14,268)