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Acquisitions - Additional Information (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 21, 2018 | Oct. 02, 2017 | Jul. 09, 2018 | Dec. 31, 2017 | Sep. 30, 2018 | Feb. 17, 2017
Business Acquisition [Line Items] |  |  |  |  |  |
Payments to acquire intangible assets | $ 20,600 |  |  |  |  |
Consideration transferred |  |  |  | $ 2,000,000 |  |
Contingent consideration liabilities |  |  |  | $ 272,136 | $ 244,574 |
Aggregate milestone payment, maximum |  |  |  |  | 325,000 |
Vascular Solutions, Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Net assets acquired |  |  |  |  |  | $ 975,500
NeoTract |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash payment to acquire business |  | $ 725,600 |  |  |  |
Business acquisition working capital adjustment |  | 1,400 |  |  |  |
Contingent consideration liabilities |  |  |  |  | 229,400 |
Aggregate milestone payment, maximum |  | $ 300,000 |  |  | $ 300,000 |
Milestone payment |  |  | $ 75,000 |  |  |

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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=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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