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Business Combinations - Skaff Narratives (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 02, 2018 | Mar. 31, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Business Acquisition |  |  |  |
Payment for acquisition of businesses, net of cash acquired |  |  | $ 603.9 | $ 12.5
Goodwill purchase price adjustment |  |  | 44.0 |
Skaff |  |  |  |
Business Acquisition |  |  |  |
Voting percentage acquired | 100.00% |  |  |
Payment for acquisition of businesses, net of cash acquired | $ 12.5 |  |  |
Long-term deferred tax liabilities |  | $ 0.8 |  |
Goodwill purchase price adjustment |  | $ 0.8 | $ 0.8 |

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- Definition Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liability, Non-current + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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