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Equity, Long-Term Incentive Compensation Plans and Non-controlling Interest - Restricted Stock Unit Activities (Details) $ / shares in Units, shares in Thousands, $ in Millions | 3 Months Ended | 9 Months Ended |  |
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Mar. 31, 2019 USD ($) $ / shares shares | Mar. 31, 2018 $ / shares | Mar. 31, 2019 USD ($) Installment $ / shares shares | Mar. 31, 2018 $ / shares | Jun. 30, 2018 shares | Jun. 30, 2017 shares
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Maximum number of shares available for grant (in shares) | [1] | 11,836 |  | 11,836 |  | 3,680 | [2] |
Restricted stock units |  |  |  |  |  |  |  |
Restricted Stock Units Activity Rollforward |  |  |  |  |  |  |  |
Granted (in shares) | [1],[2],[3],[4] |  |  | 2,209 |  |  |  |
Granted adjustments (in shares) | [1],[5] |  |  | (5) |  |  |  |
Forfeited (in shares) | [1] |  |  | (20) |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Restricted stock units granted, weighted-average grant date fair value (in dollars per share) | $ / shares |  | $ 97.60 | $ 109.80 | $ 103.59 | $ 91.84 |  |  |
Unrecognized stock-based compensation balance | $ |  | $ 171.5 |  | $ 171.5 |  |  |  |
Estimated weighted-average amortization period |  |  |  | 1 year 7 months 12 days |  |  |  |
Intrinsic value, RSUs | $ |  | $ 350.0 |  | $ 350.0 |  |  |  |
Restricted stock unit, Service-based | Minimum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, number of equal vesting installments | Installment |  |  |  | 2 |  |  |  |
Restricted stock unit, Service-based | Maximum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, number of equal vesting installments | Installment |  |  |  | 4 |  |  |  |
Restricted stock unit, Performance-based and Service-based |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, number of equal vesting installments | Installment |  |  |  | 2 |  |  |  |
First anniversary | Restricted stock unit, Service-based | Minimum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 33.33% |  |  |  |
First anniversary | Restricted stock unit, Service-based | Maximum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 25.00% |  |  |  |
Second anniversary | Restricted stock unit, Service-based | Minimum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 33.33% |  |  |  |
Second anniversary | Restricted stock unit, Service-based | Maximum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 25.00% |  |  |  |
Third anniversary | Restricted stock unit, Service-based | Minimum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 33.33% |  |  |  |
Third anniversary | Restricted stock unit, Service-based | Maximum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 25.00% |  |  |  |
Third anniversary | Restricted stock unit, Performance-based and Service-based |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 50.00% |  |  |  |
Fourth anniversary | Restricted stock unit, Service-based | Maximum |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 25.00% |  |  |  |
Fourth anniversary | Restricted stock unit, Performance-based and Service-based |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Service and performance-based, percentage of equal vesting installments (as a percent) |  |  |  | 50.00% |  |  |  |
2004 Plan | Restricted stock units |  |  |  |  |  |  |  |
Restricted Stock Units Activity Rollforward |  |  |  |  |  |  |  |
Outstanding restricted stock units as of June 30, 2018 (in shares) | [6],[7] |  |  | 2,014 |  |  |  |
Granted (in shares) | [6],[7] |  |  | 1,104 |  |  |  |
Granted adjustments (in shares) | [7],[8] |  |  | (2) |  |  |  |
Assumed upon Orbotech Acquisition (in shares) | [9] |  |  | 519 |  |  |  |
Vested and released (in shares) | [7] |  |  | (409) |  |  |  |
Withheld for taxes (in shares) | [7] |  |  | (285) |  |  |  |
Forfeited (in shares) | [7] |  |  | (10) |  |  |  |
Outstanding restricted stock units as of March 31, 2019 (in shares) | [6],[7] | 2,931 |  | 2,931 |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Outstanding restricted stock units as of June 30, 2018, weighted-average grant date fair value (in dollars per share) | $ / shares | [6] |  |  | $ 76.50 |  |  |  |
Restricted stock units granted, weighted-average grant date fair value (in dollars per share) | $ / shares | [6] |  |  | 103.59 |  |  |  |
Restricted stock units granted adjustments, weighted-average grant date fair value (in dollars per share) | $ / shares | [8] |  |  | 50.88 |  |  |  |
Restricted stock units assumed upon Orbotech Acquisition, weighted-average grant date fair value (in dollars per share) | $ / shares | [9] |  |  | 104.49 |  |  |  |
Restricted stock units vested and released, weighted-average grant date fair value (in dollars per share) | $ / shares |  |  |  | 68.73 |  |  |  |
Restricted stock units withheld for taxes, weighted-average grant date fair value (in dollars per share) | $ / shares |  |  |  | 68.73 |  |  |  |
Restricted stock units forfeited, weighted-average grant date fair value (in dollars per share) | $ / shares |  |  |  | 81.55 |  |  |  |
Outstanding restricted stock units as of March 31, 2019, weighted-average grant date fair value (in dollars per share) | $ / shares | [6] | $ 93.46 |  | $ 93.46 |  |  |  |
2004 Plan | Restricted stock unit, Performance-based and Service-based |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Maximum number of shares available for grant (in shares) |  | 600 |  | 600 |  | 200 |  | 42
Awards Granted before November 6, 2013 |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Impact on share reserve multiplier |  | 1.8 |  | 1.8 |  |  |  |
Awards Granted before November 6, 2013 | 2004 Plan |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Impact on share reserve multiplier |  | 1.8 |  | 1.8 |  |  |  |
Awards Granted after November 6, 2013 |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Impact on share reserve multiplier |  | 2.0 |  | 2.0 |  |  |  |
Awards Granted after November 6, 2013 | 2004 Plan |  |  |  |  |  |  |  |
Restricted Stock Units Activity, Weighted Average Grant Date Fair Value Rollforward |  |  |  |  |  |  |  |
Impact on share reserve multiplier |  | 2.0 |  | 2.0 |  |  |  |
[1] | The number of RSUs reflects the application of the award multiplier (1.8x or 2.0x depending on the grant date of the applicable award)
[2] | No additional stock options, RSUs or other awards will be granted under the Assumed Equity Plans.
[3] | Includes RSUs granted to senior management during the nine months ended March 31, 2019 with performance-based vesting criteria (in addition to service-based vesting criteria for any of such RSUs that are deemed to have been earned) (“performance-based RSUs”). As of March 31, 2019, it had not yet been determined the extent to which (if at all) the performance-based vesting criteria had been satisfied. Therefore, this line item includes all such performance-based RSUs granted during the nine months ended March 31, 2019, reported at the maximum possible number of shares that may ultimately be issuable if all applicable performance-based criteria are achieved at their maximum levels and all applicable service-based criteria are fully satisfied (0.7 million shares for the nine months ended March 31, 2019 reflects the application of the multiplier described above).
[4] | Represents the portion of RSUs granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the nine months ended March 31, 2019
[5] | Represents the portion of RSUs granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during the nine months ended March 31, 2019.
[6] | Includes performance-based and market-based RSUs. As of March 31, 2019, it had not yet been determined the extent to which (if at all) the performance-based or market-based vesting criteria had been satisfied. Therefore, this line item includes all such RSUs reported at the maximum possible number of shares (42 thousand shares for the fiscal year ended June 30, 2017, 0.2 million shares for the fiscal year ended June 30, 2018 and 0.6 million shares for the nine months ended March 31, 2019) that may ultimately be issuable if all applicable performance-based and market-based criteria are achieved at their maximum and all applicable service-based criteria are fully satisfied
[7] | Share numbers reflect actual shares subject to awarded RSUs. Under the terms of the 2004 Plan, the number of shares subject to each award reflected in this number is multiplied by either 1.8x or 2.0x (depending on the grant date of the award) to calculate the impact of the award on the share reserve under the 2004 Plan.
[8] | Represents the portion of RSUs granted with performance-based vesting criteria and reported at the actual number of shares issued upon achievement of the performance vesting criteria during nine months ended March 31, 2019.
[9] | Represents Assumed RSUs under the Assumed Equity Plans. Since the Assumed RSUs do not have “dividend equivalent” rights, the fair value was calculated using the closing price of our common stock on the Acquisition Date, adjusted to exclude the present value of dividends.

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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