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Income Taxes - Schedule Of Income Tax Difference From Statutory Rate (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |
Federal tax at statutory rate | $ 411.4 | $ 337.4 | $ 397.0
State taxes, net of federal benefits | 35.0 | 34.9 | 33.1
Foreign rate differential | (64.4) | (64.2) | (54.3)
U.S. tax on foreign earnings | 70.9 | 75.4 | 40.1
Research and development credit | (48.6) | (41.7) | (30.7)
Excess tax benefits related to share-based compensation | (107.9) | (98.7) | (185.8)
Share-based compensation not benefited | 29.5 | 24.1 | 17.8
Unrecognized tax benefits related to share-based compensation | 4.4 | 3.3 | 13.6
Reversal of unrecognized tax benefits | (20.9) | (11.1) | (3.0)
Swiss tax benefits, net of valuation allowance | (92.3) | 0.0 | 0.0
Deferred tax re-measurement | (67.1) | 0.0 | (66.4)
Other | (8.4) | 3.0 | 0.8
Total income tax expense | $ 141.6 | $ 262.4 | $ 162.2

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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 35 -Paragraph 2 -SubTopic 740 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480887/718-740-35-2 + Details
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