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Acquisitions and Divestitures - Allocation of Acquisition Costs to Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020 | Jun. 14, 2021 | Mar. 10, 2021 | Feb. 28, 2020
Business Acquisition [Line Items] |  |  |  |  |
Goodwill | $ 2,210,570 | $ 1,895,574 |  |  |
ABEL |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Current assets, net of cash acquired |  |  |  | $ 18,419 |
Property, plant and equipment |  |  |  | 4,034 |
Goodwill |  |  |  | 59,481 |
Intangible assets |  |  |  | 46,000 |
Other noncurrent assets |  |  |  | 123 |
Total assets acquired |  |  |  | 128,057 |
Current liabilities |  |  |  | (7,100) |
Deferred income taxes |  |  |  | (14,537) |
Other noncurrent liabilities |  |  |  | (84) |
Net assets acquired |  |  |  | $ 106,336 |
Adjustment to purchase price | $ 100 |  |  |  |
Airtech |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Current assets, net of cash acquired |  |  | $ 54,916 |  |
Property, plant and equipment |  |  | 4,868 |  |
Goodwill |  |  | 271,301 |  |
Intangible assets |  |  | 194,300 |  |
Other noncurrent assets |  |  | 87 |  |
Total assets acquired |  |  | 525,472 |  |
Current liabilities |  |  | (8,315) |  |
Deferred income taxes |  |  | (47,886) |  |
Other noncurrent liabilities |  |  | (1) |  |
Net assets acquired |  |  | $ 469,270 |  |
Flow MD |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Current assets, net of cash acquired |  |  |  |  | $ 32,858
Property, plant and equipment |  |  |  |  | 4,166
Goodwill |  |  |  |  | 60,026
Intangible assets |  |  |  |  | 53,000
Other noncurrent assets |  |  |  |  | 1,344
Total assets acquired |  |  |  |  | 151,394
Current liabilities |  |  |  |  | (32,291)
Deferred income taxes |  |  |  |  | 2,459
Other noncurrent liabilities |  |  |  |  | (329)
Net assets acquired |  |  |  |  | $ 121,233
Adjustment to purchase price |  | $ 400 |  |  |

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