Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
	Aug. 17, 2015	Apr. 02, 2016	Mar. 28, 2015	Apr. 02, 2016	Mar. 28, 2015	Aug. 21, 2013
Numerator:
Income (loss) from continuing operations, net of taxes		$ 27.4	$ (35.8)	$ 17.1	$ (99.3)
Income (loss) from discontinued operations, net of taxes		5.0	22.6	(45.4)	51.3
Net income (loss)		$ 32.4	$ (13.2)	$ (28.3)	$ (48.0)
Denominator:
Weighted-average number of common shares outstanding - basic (in shares)		232.0	233.2	234.4	232.1
Effect of dilutive securities from stock-based benefit plans - Diluted (in shares)		2.6	0.0	3.0	0.0
Shares used in per share calculation - diluted (in shares)		234.6	233.2	237.4	232.1
Net income (loss) per share from - basic and diluted:
Continuing operations (in dollars per share)		$ 0.12	$ (0.16)	$ 0.07	$ (0.43)
Discontinued operations (in dollars per share)		0.02	0.10	(0.19)	0.22
Net income (loss) per share (in dollars per share)		$ 0.14	$ (0.06)	$ (0.12)	$ (0.21)
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		4.2	14.1	3.3	14.4
2033 Notes
Convertible notes
Interest rate on senior convertible notes (as a percent)		0.625%	0.625%	0.625%	0.625%	0.625%
Conversion price of debt (in dollars per share)	$ 11.28	$ 11.28	$ 11.28	$ 11.28	$ 11.28
Stock options and ESPP
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		1.2	3.7	1.0	3.8
Restricted Stock Units
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		3.0	10.4	2.3	10.6