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Share-Based Compensation - Summary Of Share-Based Compensation (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Oct. 01, 2021 | Oct. 02, 2020 | Oct. 01, 2021 | Oct. 02, 2020
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense | $ 22.7 | $ 17.5 | $ 74.1 | $ 51.2
Income tax benefit | (4.8) | (3.7) | (15.6) | (10.8)
Share-based compensation expense, net of taxes | 17.9 | 13.8 | 58.5 | 40.4
Cost of revenue |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense | 3.6 | 3.1 | 11.8 | 8.5
Research and development |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense | 5.4 | 4.8 | 18.4 | 13.2
Selling and marketing |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense | 3.7 | 3.4 | 12.5 | 9.5
General and administrative |  |  |  |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
Share-based compensation expense | $ 10.0 | $ 6.2 | $ 31.4 | $ 20.0

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