Defined contribution plan additional annual contribution per employee over age of fifty amount.

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Employee Stock Ownership Plan (ESOP), plan description, maximum offering period.

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Share-based compensation arrangement by share-based payment award, fair value assumptions, expected forfeiture rate.

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Share based compensation arrangement by share based payment award, market price.

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Share-based compensation arrangement by share-based payment award, maximum number of shares issued on each purchase period.

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Previously Expired Awards Reinstated, Number

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Share Based Compensation Arrangement By Share Based Payment Award Outstanding Number

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Share-based compensation arrangement by share-based payment award decrease in shares available for grant for each full value award.

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Share based compensation arrangement by share based payment award offering period.

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Amount of discretionary contributions made by an employer to a defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Percentage employer matches of the employee's percentage contribution matched.

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Maximum amount the employee may contribute to a defined contribution plan.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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Amount of payment for pension benefits. Excludes other postretirement benefits.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan.

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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

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No definition available.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Gross number of share options (or share units) granted during the period.

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No definition available.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The addition or reduction in the number of reserved shares that could potentially be issued under the option plan attributable to reasons other than grants, exercises, forfeitures, and expirations during the reporting period.

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Number of options outstanding, including both vested and non-vested options.

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- Definition

The number of shares purchased on the open market during the period for issuance to employees under the plan.

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-Name Accounting Standards Codification
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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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Employee Benefit Plans (including Share-based Compensation) (Narratives) (Details) - USD ($)				12 Months Ended				24 Months Ended	43 Months Ended
	Feb. 01, 2016	Aug. 27, 2014	Dec. 02, 2005	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Nov. 20, 2013	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional authorized shares for issuance				8,300,000
Employee stock options and stock awards available for grant				7,629,000	5,401,000	5,450,000		7,629,000	7,629,000	8,762,000
Shares outstanding for options and awards				3,062,000	6,385,000			3,062,000	3,062,000
Total intrinsic value of options exercised				$ 5,700,000	$ 200,000	$ 400,000
Employee stock options and stock awards available for grant				0
Weighted-average grant-date fair value of options granted (in dollars per share)					$ 1.59	$ 1.75
Total unrecognized compensation cost for unvested stock options				$ 400,000				$ 400,000	$ 400,000
Unrecognized compensation costs for non-vested stock awards				25,100,000				$ 25,100,000	$ 25,100,000
401(k) Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual contributions per employee				18,000
Additional annual contribution per employee over age of 50				$ 6,000
Employer matching contribution per dollar contributed by employee				50.00%
Maximum employer matching contribution of employee total compensation (percent)				2.50%
Matching contributions to the Plan				$ 1,400,000	$ 1,200,000	$ 1,100,000
Employer discretionary contributions				$ 0	$ 0	$ 0
Non-Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated forfeiture rate					13.00%
Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated forfeiture rate					19.00%
Unvested Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognition period for compensation cost not yet recognized (in years, months, and days)				1 year 3 months 18 days
Performance-based Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in dollars per share)						$ 1.21
Recognition period for compensation cost not yet recognized (in years, months, and days)						1 year 10 months 24 days
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value, as of the respective vesting dates				$ 9,100,000	$ 8,600,000	$ 8,900,000
Aggregate shares withheld upon vesting				361,369	118,129	826,943
Cash remitted to the appropriate taxing authorities				$ 2,000,000	$ 200,000	$ 2,800,000
Non-vested Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recognition period for compensation cost not yet recognized (in years, months, and days)				1 year 10 months 24 days
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares for issuance							9,000,000
Shares subject to previously expired awards reinstated							12,709,153
Decrease in shares available for future grants for each Full Value Award awarded							1.50%
Additional authorized shares for issuance				8,300,000
Employee stock options and stock awards available for grant				7,628,980	5,401,000	5,450,000		7,628,980	7,628,980	8,762,000
Shares outstanding for options and awards				7,994,086				7,994,086	7,994,086
Contractual term				7 years
Shares transferred from 2005 plan to 2013 plan									6,628,643
Enterasys Networks Inc. 2013 Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options and stock awards available for grant				0				0	0
Shares outstanding for options and awards				1,282,691				1,282,691	1,282,691
Contractual term				7 years
2005 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Decrease in shares available for future grants for each Full Value Award awarded				1.50%
Employee stock options and stock awards available for grant				0				0	0
Shares included in outstanding options and awards				449,062				449,062	449,062
Amended 1996 Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options and stock awards available for grant				0				0	0
2014 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares for issuance		12,000,000
Maximum offering period per purchase period (in months)				6 months
Maximum of total compensation permitted to acquire shares (percent)		15.00%
Percent of fair market value for price per share to employees (percent)		85.00%
Maximum shares issuable for each purchase period	1,500,000	1,000,000
2014 Employee Stock Purchase Plan \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares for issuance					4,215,122
2014 Employee Stock Purchase Plan \| Minimum \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering periods (in months)				6 months
2014 Employee Stock Purchase Plan \| Maximum \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Offering periods (in months)				24 months
1999 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized shares for issuance			12,000,000
Additional authorized shares for issuance			5,000,000
Maximum of total compensation permitted to acquire shares (percent)			15.00%
Percent of fair market value for price per share to employees (percent)			85.00%
Shares purchased under plan								11,933,618
2014 Employee Stock Purchase Plan and 1999 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted (in dollars per share)				$ 1.24	$ 0.92	$ 0.90