Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
	Aug. 17, 2015	Apr. 01, 2017	Apr. 02, 2016	Apr. 01, 2017	Apr. 02, 2016	Mar. 03, 2017	Aug. 21, 2013
Numerator:
Income from continuing operations, net of taxes		$ 26.0	$ 28.8	$ 153.2	$ 14.1
Income (loss) from discontinued operations, net of taxes		0.0	5.0	0.0	(45.4)
Net income (loss)		$ 26.0	$ 33.8	$ 153.2	$ (31.3)
Denominator:
Weighted-average number of common shares outstanding - basic (in shares)		229.4	232.0	230.8	234.4
Effect of dilutive securities from stock-based benefit plans (in shares)		5.2	2.6	5.1	3.0
Shares used in per share calculation - diluted (in shares)		234.6	234.6	235.9	237.4
Net income (loss) per share from - basic:
Continuing operations (in dollars per share)		$ 0.11	$ 0.13	$ 0.66	$ 0.06
Discontinued operations (in dollars per share)		0.00	0.02	0.00	(0.19)
Net (loss) income per share (in dollars per share)		0.11	0.15	0.66	(0.13)
Net income (loss) per share from - diluted:
Continuing operations (in dollars per share)		0.11	0.12	0.65	0.06
Discontinued operations (in dollars per share)		0.00	0.02	0.00	(0.19)
Net income (loss) per share (in dollars per share)		$ 0.11	$ 0.14	$ 0.65	$ (0.13)
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		0.3	4.2	0.3	3.3
2033 Notes
Convertible notes
Interest rate on senior convertible notes		0.625%		0.625%			0.625%
Conversion price of debt (in dollars per share)	$ 11.28			$ 11.28
2024 Notes | Convertible Notes
Convertible notes
Interest rate on senior convertible notes		1.00%		1.00%		1.00%
Conversion price of debt (in dollars per share)				$ 13.22
Stock options and ESPP
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		0.3	1.2	0.3	1.0
Restricted Stock Units
Anti-dilutive securities excluded from computation of earnings per share
Total potentially dilutive securities (in shares)		0.0	3.0	0.0	2.3