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Business Combinations - Other Fiscal 2019 and 2018 Acquisitions Additional Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2019 USD ($) company | Sep. 30, 2018 USD ($) company | Mar. 31, 2019 USD ($) | Jun. 30, 2018 USD ($)
Business Acquisition |  |  |  |
Goodwill | $ 2,172,902,000 |  | $ 2,172,902,000 | $ 354,698,000
Three privately-held companies |  |  |  |
Business Acquisition |  |  |  |
Number of companies acquired | company | 3 |  |  |
Total purchase consideration | $ 118,000,000 |  |  |
Additional consideration (up to) | 13,000,000.0 |  | 13,000,000.0 |
Additional contingent consideration, liability | 4,800,000 |  | 4,800,000 |
Two privately-held companies |  |  |  |
Business Acquisition |  |  |  |
Number of companies acquired | company |  | 2 |  |
Total purchase consideration |  | $ 15,400,000 |  |
Additional consideration (up to) |  | $ 6,000,000.0 |  |
Additional contingent consideration, liability | 1,900,000 |  | 1,900,000 |
Acquisition of privately-held companies in 2019 |  |  |  |
Business Acquisition |  |  |  |
Revenue of acquiree since acquisition | 2,300,000 |  | 3,100,000 |
Net income of acquiree since acquisition | 2,800,000 |  | 3,500,000 |
Acquisition-related costs |  |  | 37,200,000 |
Goodwill | $ 43,357,000 |  | $ 43,357,000 |
Product line from Keysight Technologies, Inc. |  |  |  |
Business Acquisition |  |  |  |
Total purchase consideration |  |  |  | 12,100,000
Goodwill |  |  |  | $ 5,200,000

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 + Details
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