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Basis of Presentation (Tables) | 12 Months Ended
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Dec. 31, 2022
Accounting Policies [Abstract] |
Net Property, Plant and Equipment | As of December 31, 2022 and 2021, the Company’s net property, plant, and equipment consisted of the following:
|  | December 31, |
|  | 2022 |  |  | 2021 |
|  | (in millions) |
Property, plant, and equipment, at cost: |  |  |  |  |  |
Land and buildings |  | $ | 51.2 |  |  | $ | 51.2 |
Furniture and fixtures |  |  | 26.8 |  |  |  | 27.9 |
Equipment |  |  | 1,181.5 |  |  |  | 1,127.1 |
Building and leasehold improvements |  |  | 260.8 |  |  |  | 254.5 |
Total property, plant, and equipment, at cost |  |  | 1,520.3 |  |  |  | 1,460.7 |
Less: accumulated depreciation and amortization |  |  | (1,034.0 | ) |  |  | (1,018.6 | )
Property, plant, and equipment, at cost, net of accumulated depreciation and amortization |  | $ | 486.3 |  |  | $ | 442.1 |
Summary of Reconciliation of Cash, Cash Equivalents and Restricted Cash for Balance Sheets and Cash Flows | The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Company’s consolidated balance sheets that sum to the total of the same such amounts shown in the Company’s consolidated statements of cash flows:
|  | December 31, |
|  | 2022 |  |  | 2021 |
|  | (in millions) |
Cash and cash equivalents |  | $ | 508.0 |  |  | $ | 601.5 |
Restricted cash included in Prepaid expenses and other current assets |  |  | 2.5 |  |  |  | 2.6 |
Restricted cash included in Other assets |  |  | 5.8 |  |  |  | 6.3 |
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows |  | $ | 516.3 |  |  | $ | 610.4 |
Computation of Basic and Diluted Earnings Per Share | The following are the common share amounts used to compute the basic and diluted earnings per share for each period:
|  | Year Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
|  | (in millions) |
Weighted-average shares used in basic computations |  |  | 98.5 |  |  |  | 105.9 |  |  |  | 131.5 |
Dilutive effect of exercise of equity grants outstanding |  |  | 1.0 |  |  |  | 2.4 |  |  |  | 3.0 |
Dilutive effect of 2028 Convertible Notes |  |  | — |  |  |  | — |  |  |  | — |
Weighted-average shares used in diluted computations |  |  | 99.5 |  |  |  | 108.3 |  |  |  | 134.5 |

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