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Income Taxes, Provision and Effective tax rate (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Income Taxes |  |  |  |
Provision for income taxes | $ (166.1) | $ (115.2) | $ (412.0) | $ (363.0)
Effective tax rate | 21.40% | 18.20% | 19.60% | 20.30%
Discrete tax benefit comprised of the settlement of tax audits and lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position |  |  | $ 18.6 |
Impact on the effective tax rate associated with the discrete tax benefit comprised of the settlement of tax audits and lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position. |  |  | (0.90%) |
Excess tax benefit from option exercises | $ 21.4 | $ 38.3 | $ 82.0 | $ 67.3
Excess tax benefit, impact on effective tax rate | (2.80%) | (6.00%) | (3.90%) | (3.80%)
Impact of gain associated with the bargain purchase acquisition on the effective tax rate |  |  |  | (0.10%)
Impact of acquisition-related expenses on the effective tax rate | 0.20% | 0.20% | 0.40% | 0.10%

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- Definition Percentage (in basis points) of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) excluding the effect of the discrete tax benefit comprised of the settlement of tax audits and lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position. The resulting basis point impact reflects the impact of these discrete tax items on the effective tax rate (in basis points). + References No definition available. + Details
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