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Segment Reporting (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Segment Reporting Information [Line Items] |  |  |  |
Net sales | $ 560,633 | $ 545,138 | $ 1,687,231 | $ 1,672,568
Income before income taxes | (335,216) | 350,131 | 1,561,651 | 1,553,906
Life Science [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 215,700 | 206,600 | 643,900 | 622,200
Income before income taxes | 11,600 | 10,200 | 45,900 | 25,700
Clinical Diagnostics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 341,800 | 334,000 | 1,032,900 | 1,038,800
Income before income taxes | 43,800 | 22,400 | 117,100 | 86,800
Other Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 3,100 | 4,500 | 10,400 | 11,600
Income before income taxes | $ (400) | $ 100 | $ (1,100) | $ 100

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