Income Tax Expense (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 25, 2011	Dec. 25, 2011	Jun. 26, 2011
Income Tax Expense [Line Items]
Effective tax rate	16.50%	17.30%
U.S. federal statutory tax rate		35.00%
Tax expense due to filing of prior year foreign tax returns	$ 2.2	$ 3.8
Tax expense of interest related to uncertain tax positions	0.8	1.7
Unrecognized tax benefits that would impact effective tax rate	119.6	119.6
Gross interest and penalties, relating to unrecognized tax benefits accrued		17.1	16.9
Significant adjustments proposed by IRS or FTB		0
Tax benefit related to acquisition, restructuring and asset impairment expenses	2.5	3.7
Recognition of previously unrecognized tax benefits	6.9	7.1
California And Foreign [Member]
Income Tax Expense [Line Items]
Deferred tax asset for which it is more likely than not that all or a portion will be realized	46.2	46.2
Valuation allowance credited to consolidated statement of operations		$ 46.2