Income Tax (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Income Tax Disclosure [Abstract] | ||||
| Effective income tax rate reconciliation, percent | 23.40% | 24.10% | 24.80% | 24.50% |
| Tax cuts and jobs act of 2017, transition tax for accumulated foreign earnings income tax expense (benefit) | $ 9.5 | $ 9.5 | $ 9.5 | |
| Tax cuts and jobs act of 2017, change in tax rate, deferred tax liability, income tax (expense) benefit | $ (10.6) | 10.6 | (10.6) | |
| Income taxes paid | $ 37.2 | $ 28.5 | ||
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- Definition Tax Cuts And Jobs Act Of 2017, Change In Tax Rate, Deferred Tax Liability, Income Tax (Expense) Benefit No definition available.
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- Definition Tax Cuts And Jobs Act Of 2017, Transition Tax For Accumulated Foreign Earnings Income, Tax Expense (Benefit) No definition available.
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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