Recently Issued Accounting Pronouncements (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Jun. 30, 2018
ASSETS
Accounts receivable, net	$ 224.1		$ 218.6
Prepayments and other assets	53.0		56.3
Deferred income taxes	113.4		114.3
Other non-current assets	20.7		15.4
Total assets	1,888.8		2,026.8
LIABILITIES AND STOCKHOLDERS’ EQUITY
Deferred revenue	61.5		60.6
Accrued payroll and related expenses	57.7		52.8
Other current liabilities	74.8		78.9
Total stockholders’ equity	186.5		180.8
Total liabilities and stockholders’ equity	709.6		734.9
Total liabilities and stockholders’ equity	1,888.8		2,026.8
Revenues:
Total net revenue	268.5	$ 190.9
Cost of revenues:
Amortization of acquired technologies	9.4	4.1
Total cost of revenue	118.1	78.2
Gross profit	150.4	112.7
Income from operations	(1.2)	6.7
Loss before taxes	(9.6)	(5.6)
Provision for income taxes	5.7	2.0
Net loss	(15.3)	$ (7.6)
Net loss per common share:
Basic and diluted (in dollars per share)		$ (0.03)
Shares used in per share calculations:
Basic and diluted (in shares)		228.1
As Reported
ASSETS
Accounts receivable, net			217.5
Prepayments and other assets			54.8
Deferred income taxes			114.5
Other non-current assets			13.6
Total assets			2,022.6
LIABILITIES AND STOCKHOLDERS’ EQUITY
Deferred revenue			71.9
Accrued payroll and related expenses			51.4
Other current liabilities			77.0
Total stockholders’ equity			182.8
Total liabilities and stockholders’ equity			720.7
Total liabilities and stockholders’ equity			2,022.6
Revenues:
Total net revenue		$ 195.2
Cost of revenues:
Total cost of revenue		79.0
Gross profit		116.2
Income from operations		10.0
Loss before taxes		(2.3)
Provision for income taxes		2.5
Net loss		$ (4.8)
Net loss per common share:
Basic and diluted (in dollars per share)		$ (0.02)
Shares used in per share calculations:
Basic and diluted (in shares)		228.1
Adjustment | Accounting Standards Update 2014-09
ASSETS
Accounts receivable, net			1.1
Prepayments and other assets			1.5
Deferred income taxes			(0.2)
Other non-current assets			1.8
Total assets			4.2
LIABILITIES AND STOCKHOLDERS’ EQUITY
Deferred revenue			(11.3)
Accrued payroll and related expenses			1.4
Other current liabilities			1.9
Total stockholders’ equity			(2.0)
Total liabilities and stockholders’ equity			14.2
Total liabilities and stockholders’ equity			$ 4.2
Revenues:
Total net revenue		$ (4.3)
Cost of revenues:
Total cost of revenue		(0.8)
Gross profit		(3.5)
Income from operations		(3.3)
Loss before taxes		(3.3)
Provision for income taxes		(0.5)
Net loss		$ (2.8)
Net loss per common share:
Basic and diluted (in dollars per share)		$ (0.01)
Shares used in per share calculations:
Basic and diluted (in shares)		0.0
Product
Revenues:
Total net revenue	241.1	$ 165.1
Cost of revenues:
Cost of goods and services sold	97.9	62.6
Product | As Reported
Revenues:
Total net revenue		171.9
Cost of revenues:
Cost of goods and services sold		63.5
Product | Adjustment | Accounting Standards Update 2014-09
Revenues:
Total net revenue		(6.8)
Cost of revenues:
Cost of goods and services sold		(0.9)
Service
Revenues:
Total net revenue	27.4	25.8
Cost of revenues:
Cost of goods and services sold	$ 10.8	11.5
Service | As Reported
Revenues:
Total net revenue		23.3
Cost of revenues:
Cost of goods and services sold		11.4
Amortization of acquired technologies		4.1
Service | Adjustment | Accounting Standards Update 2014-09
Revenues:
Total net revenue		2.5
Cost of revenues:
Cost of goods and services sold		0.1
Amortization of acquired technologies		$ 0.0