Impairment of Long-Lived Assets (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended	3 Months Ended		3 Months Ended
	Mar. 31, 2012	Jun. 30, 2012	Sep. 26, 2009 End-of-Line Sorting and Testing Facilities [Member]	Jun. 26, 2010 End-of-Line Sorting and Testing Facilities [Member]	Sep. 26, 2009 Wafer Fabrication Facilit, Oregon [Member]	Jun. 25, 2011 Wafer Fabrication Facilit, Oregon [Member]
Long Lived Assets Held-for-sale [Line Items]
Impairment of long-lived assets to be disposed of	$ 7.7	$ 22.4	$ 5.0		$ 3.3
Long-lived assets held for sale				$ 0.6		$ 0.5