Earnings Per Share (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended							12 Months Ended
	Jun. 29, 2013	Mar. 30, 2013	Dec. 29, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Oct. 01, 2011	Jun. 29, 2013	Jun. 30, 2012	Jul. 02, 2011	Jun. 29, 2013 1% senior convertible notes	Jun. 30, 2012 1% senior convertible notes	Jul. 02, 2011 1% senior convertible notes	Jun. 05, 2006 1% senior convertible notes	Jun. 29, 2013 Stock options and ESPP	Jun. 30, 2012 Stock options and ESPP	Jul. 02, 2011 Stock options and ESPP	Jun. 29, 2013 RSUs	Jun. 30, 2012 RSUs
Numerator:
Income (loss) from continuing operations, net of tax	$ 91.5	$ (28.0)	$ 3.3	$ (9.8)	$ 1.4	$ (16.2)	$ (7.7)	$ (3.6)	$ 57.0	$ (26.1)	$ 78.7
Income (loss) from discontinued operations, net of tax	1.0		0.8	(1.8)	(23.6)	(1.2)	(2.5)	(2.2)		(29.5)	(7.1)
Net income (loss)	$ 92.5	$ (28.0)	$ 4.1	$ (11.6)	$ (22.2)	$ (17.4)	$ (10.2)	$ (5.8)	$ 57.0	$ (55.6)	$ 71.6
Denominator:
Weighted-average number of common shares outstanding-Basic	236.9	235.9	234.4	232.8	231.7	230.6	229.4	228.4	235.0	230.0	224.4
Effect of dilutive securities from stock-based benefit plans (in shares)									4.3		8.2
Weighted-average number of common shares outstanding-Diluted	241.1	235.9	237.1	232.8	231.7	230.6	229.4	228.4	239.3	230.0	232.6
Basic net income (loss) per share from:
Continuing operations, net of tax (in dollars per share)	$ 0.39	$ (0.12)	$ 0.02	$ (0.04)	$ 0.01	$ (0.07)	$ (0.03)	$ (0.02)	$ 0.24	$ (0.11)	$ 0.35
Discontinued operations, net of tax (in dollars per share)				$ (0.01)	$ (0.11)	$ (0.01)	$ (0.01)	$ (0.01)		$ (0.13)	$ (0.03)
Net income (loss) (in dollars per share)	$ 0.39	$ (0.12)	$ 0.02	$ (0.05)	$ (0.10)	$ (0.08)	$ (0.04)	$ (0.03)	$ 0.24	$ (0.24)	$ 0.32
Diluted net income (loss) per share from:
Continuing operations, net of tax (in dollars per share)	$ 0.38	$ (0.12)	$ 0.02	$ (0.04)	$ 0.01	$ (0.07)	$ (0.03)	$ (0.02)	$ 0.24	$ (0.11)	$ 0.34
Discontinued operations, net of tax (in dollars per share)				$ (0.01)	$ (0.11)	$ (0.01)	$ (0.01)	$ (0.01)		$ (0.13)	$ (0.03)
Net income (loss) (in dollars per share)	$ 0.38	$ (0.12)	$ 0.02	$ (0.05)	$ (0.10)	$ (0.08)	$ (0.04)	$ (0.03)	$ 0.24	$ (0.24)	$ 0.31
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)									4.5	17.6	3.8					2.3	9.9	3.8	2.2	7.7
Convertible notes
Interest rate on Senior convertible notes (as a percent)												1.00%	1.00%	1.00%	1.00%
Conversion price of debt (in dollars per share)															$ 30.30