Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	Jun. 28, 2014	Jun. 29, 2013	Jun. 30, 2012
Gross deferred tax assets:
Tax credit carryforwards	$ 158.6	$ 150.1	$ 148.0
Net operating loss carryforwards	2,346.1	2,303.0	2,288.2
Inventories	13.0	16.3	15.3
Accruals and reserves	48.2	41.8	41.0
Other	121.1	127.7	102.3
Acquisition-related items	86.8	95.9	127.2
Gross deferred tax assets	2,773.8	2,734.8	2,722.0
Valuation allowance	(2,499.8)	(2,549.1)	(2,637.0)
Deferred tax assets	274.0	185.7	85.0
Gross deferred tax liabilities:
Acquisition-related items	(40.4)	(26.5)	(35.2)
Undistributed foreign earnings	(6.6)	(8.3)	(2.9)
Other	(50.2)	(3.5)	(12.3)
Deferred tax liabilities	(97.2)	(38.3)	(50.4)
Total net deferred tax assets (liabilities)	176.8	147.4	34.6
Federal
Operating Loss Carryforwards
Net operating loss carryforwards	6,066.6
State
Operating Loss Carryforwards
Net operating loss carryforwards	1,817.1
Foreign
Operating Loss Carryforwards
Net operating loss carryforwards	$ 1,012.3