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Business Segment Information - Information by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Business segment information |  |  |  |  |  |  |  |
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] |  |  |  | srt:ChiefExecutiveOfficerMember |  |  |  |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description |  |  |  | The chief operating decision maker uses segment operating income (loss) to assess the performance for each segment by comparing the results of each segment with one another, comparing actual results to budget and prior year, as well as to allocate resources. |  |  |  |
Total segment revenue |  | $ 797.4 | $ 800.7 | $ 1,598.8 |  | $ 1,522.4 |  |
Operating expenses: |  |  |  |  |  |  |  |
Selling, general and administrative |  | 231.4 | 221.3 | 456.8 |  | 416.6 |  |
Research and development |  | 100.2 | 92.2 | 197.3 |  | 174.0 |  |
Operating Income |  | 11.9 | 48.1 | 43.7 |  | 112.9 |  |
Interest and other income (expense), net |  | (11.4) | (24.2) | (18.1) |  | (17.4) |  |
Income before income taxes, equity in income of unconsolidated investees, net of tax, and noncontrolling interests in consolidated subsidiaries |  | 0.5 | 23.9 | 25.6 |  | 95.5 |  |
Assets |  | 6,339.8 |  | 6,339.8 |  |  |  | $ 5,806.7
Capital Expenditures |  | 30.3 | 24.5 | 56.3 |  | 46.0 |  |
Depreciation and Amortization |  | 56.1 | 45.1 | 106.5 |  | 79.9 |  |
Operating segments |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 799.5 | 804.7 | 1,603.3 |  | 1,528.9 |  |
Operating expenses: |  |  |  |  |  |  |  |
Cost of revenue |  | 411.6 | 394.1 | 804.4 |  | 749.5 |  |
Selling, general and administrative |  | 196.2 | 184.2 | 382.8 |  | 347.7 |  |
Research and development |  | 98.7 | 91.6 | 194.5 |  | 173.2 |  |
Operating Income |  | 93.0 | 134.8 | 221.6 |  | 258.5 |  |
Intersegment revenue |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 2.1 | 4.0 | 4.5 |  | 6.5 |  |
Corporate, eliminations and other |  |  |  |  |  |  |  |
Operating expenses: |  |  |  |  |  |  |  |
Operating Income |  | 21.1 | 24.3 | 47.9 | [1] | 47.2 | [1] |
Assets | [2] | (44.0) |  | (44.0) |  |  |  | (41.5)
BSI BioSpin |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 195.3 | 217.5 | 403.1 |  | 400.3 |  |
Operating expenses: |  |  |  |  |  |  |  |
Capital Expenditures |  | 2.3 | 3.8 | 5.5 |  | 3.4 |  |
Depreciation and Amortization |  | 11.2 | 10.4 | 21.6 |  | 18.6 |  |
BSI BioSpin | Operating segments |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 195.3 | 217.5 | 403.1 |  | 400.3 |  |
Operating expenses: |  |  |  |  |  |  |  |
Cost of revenue |  | 108.1 | 110.8 | 217.8 |  | 199.9 |  |
Selling, general and administrative |  | 40.9 | 38.3 | 79.9 |  | 75.3 |  |
Research and development |  | 23.2 | 21.8 | 45.2 |  | 43.9 |  |
Operating Income |  | 23.1 | 46.6 | 60.2 |  | 81.2 |  |
BSI BioSpin | Intersegment revenue |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 0.0 | 0.0 | 0.0 |  | 0.0 |  |
BSI CALID |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 285.8 | 265.6 | 565.9 |  | 493.5 |  |
Operating expenses: |  |  |  |  |  |  |  |
Capital Expenditures |  | 5.5 | 6.4 | 13.9 |  | 11.8 |  |
Depreciation and Amortization |  | 23.4 | 15.4 | 43.2 |  | 25.1 |  |
BSI CALID | Operating segments |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 285.8 | 265.6 | 565.9 |  | 493.5 |  |
Operating expenses: |  |  |  |  |  |  |  |
Cost of revenue |  | 125.6 | 111.5 | 243.4 |  | 205.3 |  |
Selling, general and administrative |  | 76.9 | 68.9 | 149.8 |  | 126.7 |  |
Research and development |  | 30.0 | 26.8 | 58.0 |  | 52.0 |  |
Operating Income |  | 53.3 | 58.4 | 114.7 |  | 109.5 |  |
BSI CALID | Intersegment revenue |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 0.0 | 0.0 | 0.0 |  | 0.0 |  |
BSI Nano |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 252.1 | 252.5 | 508.7 |  | 492.9 |  |
Operating expenses: |  |  |  |  |  |  |  |
Capital Expenditures |  | 13.2 | 4.0 | 18.1 |  | 10.2 |  |
Depreciation and Amortization |  | 17.1 | 15.9 | 33.8 |  | 29.3 |  |
BSI Nano | Operating segments |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 252.1 | 252.5 | 508.7 |  | 492.9 |  |
Operating expenses: |  |  |  |  |  |  |  |
Cost of revenue |  | 125.6 | 119.8 | 244.4 |  | 233.8 |  |
Selling, general and administrative |  | 72.7 | 71.8 | 142.1 |  | 134.8 |  |
Research and development |  | 44.4 | 41.7 | 89.6 |  | 75.3 |  |
Operating Income |  | 9.4 | 19.2 | 32.6 |  | 49.0 |  |
BSI Nano | Intersegment revenue |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 0.0 | 0.0 | 0.0 |  | 0.0 |  |
BSI BioSpin, BSI CALID, BSI NANO & Corporate | Operating segments |  |  |  |  |  |  |  |
Operating expenses: |  |  |  |  |  |  |  |
Assets |  | 6,192.6 |  | 6,192.6 |  |  |  | 5,648.4
BEST |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 64.2 | 65.1 | 121.1 |  | 135.7 |  |
Operating expenses: |  |  |  |  |  |  |  |
Capital Expenditures |  | 2.4 | 6.3 | 7.2 |  | 13.9 |  |
Depreciation and Amortization |  | 2.4 | 2.1 | 4.5 |  | 4.1 |  |
BEST | Operating segments |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 66.3 | 69.1 | 125.6 |  | 142.2 |  |
Operating expenses: |  |  |  |  |  |  |  |
Cost of revenue |  | 52.3 | 52.0 | 98.7 |  | 110.5 |  |
Selling, general and administrative |  | 5.7 | 5.2 | 11.0 |  | 10.9 |  |
Research and development |  | 1.1 | 1.3 | 1.7 |  | 2.0 |  |
Operating Income |  | 7.2 | 10.6 | 14.2 |  | 18.8 |  |
Assets |  | 191.2 |  | 191.2 |  |  |  | $ 199.8
BEST | Intersegment revenue |  |  |  |  |  |  |  |
Business segment information |  |  |  |  |  |  |  |
Total segment revenue |  | 2.1 | 4.0 | 4.5 |  | 6.5 |  |
Corporate |  |  |  |  |  |  |  |
Operating expenses: |  |  |  |  |  |  |  |
Capital Expenditures |  | 6.9 | 4.0 | 11.6 |  | 6.7 |  |
Depreciation and Amortization |  | 2.0 | 1.3 | 3.4 |  | 2.8 |  |
Unallocated Expenses |  |  |  |  |  |  |  |
Operating expenses: |  |  |  |  |  |  |  |
Operating Income |  | $ 60.0 | $ 62.4 | $ 130.0 | [3] | $ 98.4 | [3] |
[1] | Represents corporate costs and intersegment eliminations not allocated to the reportable segments. Unallocated costs include general and administrative expenses not directly incurred by the segments such as professional fees incurred for the quarterly reviews and annual audit of the consolidated financial statements, personnel costs of corporate accounting, finance, legal, and IT resources, and other expense items.
[2] | Assets not allocated to the reportable segments and eliminations of intercompany transactions.
[3] | Unallocated expenses consist of costs related to restructuring actions, acquisition and related integration expenses, amortization of acquired intangible assets, costs associated with our global information technology transition initiatives, and other costs.

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