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Business Combinations - Other Fiscal 2019 Additional Information (Details) | 3 Months Ended |
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Mar. 31, 2019 USD ($) company | Sep. 30, 2018 USD ($) company | Sep. 30, 2019 USD ($)
Three privately-held companies |  |  |
Business Acquisition |  |  |
Number of companies acquired | company | 3 |  |
Total purchase consideration | $ 118,300,000 |  |
Additional consideration (up to) | $ 13,000,000.0 |  |
Contingent consideration, non-current |  |  | $ 5,300,000
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 |
Contingent consideration, non-current |  |  | $ 1,700,000

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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=116859721&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=116859721&loc=d3e6578-128477 + Details
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- Definition Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 35 -Paragraph 1 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478 + Details
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