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Business Combinations - Harsco Corporation’s Air-X-Changers Narratives (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 01, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2019 | Sep. 30, 2018
Business Acquisition |  |  |  |  |
Payment for acquisition of businesses, net of cash acquired |  |  |  | $ 603.9 | $ 12.5
Harsco Corporation’s Air-X-Changers |  |  |  |  |
Business Acquisition |  |  |  |  |
Payment for acquisition of businesses, net of cash acquired | $ 599.7 |  |  |  |
Payments for acquisition of business excluding working capital adjustments |  | $ 592.0 |  |  |
Payment for working capital adjustments |  | 7.7 |  |  |
Transaction related costs |  | $ 4.2 | $ 1.2 |  |
Harsco Corporation’s Air-X-Changers | Minimum |  |  |  |  |
Business Acquisition |  |  |  |  |
Finite lived intangible assets useful life | 1 year |  |  |  |
Harsco Corporation’s Air-X-Changers | Maximum |  |  |  |  |
Business Acquisition |  |  |  |  |
Finite lived intangible assets useful life | 12 years |  |  |  |

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