Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended			3 Months Ended
	Dec. 25, 2011	Sep. 25, 2011	Dec. 26, 2010	Dec. 25, 2011	Dec. 26, 2010	Jun. 26, 2011 Undistributed Earnings of Foreign Subsidiaries Considered to be Invested Indefinitely [Member]	Sep. 25, 2011 Singapore [Member]
Reduction of statutory tax rate in U.K. [Abstract]
Statutory tax rate in the U.K., prior to reduction (in hundredths)		27.00%
Statutory tax rate in the U.K., subsequent to reduction (in hundredths)		26.00%
Statutory tax rate in the U.K., further reduction (in hundredths)		25.00%
Impact of rate reduction on tax provision for the fiscal year		$ 0.9
Impact of rate reduction on deferred tax assets with full valuation allowances		2.6
Income Tax Examination [Line Items]
Refunds received from settlement with taxing authority							1.8
Effective tax rate reconciliation [Abstract]
Effective tax rate (benefit) (in hundredths)	21.20%		6.60%	32.00%	1.70%
Statutory tax rate (in hundredths)	35.00%		35.00%	35.00%	35.00%
Deferred Tax Liability Not Recognized [Line Items]
Cumulative amount of temporary difference						79.1
Increase in reserve for uncertain tax positions	1.2
Unrecognized tax benefits	48.3			48.3
Unrecognized tax benefits that would impact the effective tax rate	12.2			12.2
Expected increase (decrease) in uncertain tax positions during the next twelve months	4.3			4.3
Accrued interest and penalties related to uncertain tax positions	2.9			2.9
Decrease in interest and penalties related to uncertain tax positions	0.2
Change in deferred tax assets [Abstract]
Deferred charge recorded	10.4
Reduction in deferred tax asset due to deferred charge	10.4
Reduction in associated valuation allowance due to deferred charge	$ 10.4
Reduction of statutory tax rate in Japan [Abstract]
Statutory tax rate in Japan, prior to reduction (in hundredths)	30.00%
Statutory tax rate in Japan, subsequent to reduction (in hundredths)	28.05%
Statutory tax rate in Japan, further reduction (in hundredths)	25.50%
Inhabitant tax rate in Japan, prior to reduction (in hundredths)	6.21%
Inhabitant tax rate in Japan, subsequent to reduction (in hundredths)	5.28%
Number of years Japan's statutory rate reduction is in effect (in years)	3