Income Taxes	9 Months Ended
Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three and nine months ended June 30, 2018, the Company had income tax expense of $9.3 and $56.4, respectively, on Earnings before income taxes of $21.4 and $140.3, respectively. The effective tax rate for the three and nine months ended June 30, 2018 was 42.9% and 40.2%, respectively. The difference between the federal statutory rate and the effective rate for the nine months ended June 30, 2018 is primarily due to a $17.4 net transitional charge resulting from the enactment of the Tax Act, as discussed below, and the impact of the goodwill impairment. For the three and nine months ended June 30, 2017, the Company had an income tax expense of $10.6 and $45.8, respectively, on Earnings before income taxes of $65.5 and $199.9, respectively. The effective tax rate for the three and nine months ended June 30, 2017 was 16.2% and 22.9%, respectively. The difference between the federal statutory rate and the effective rate for both periods is due to a higher mix of earnings in lower tax rate jurisdictions and was favorably impacted by restructuring charges in higher tax rate jurisdictions. U.S. Tax Reform On December 22, 2017, the U.S. government enacted the Tax Act. This new comprehensive tax legislation reduces the U.S. federal corporate tax rate from 35% to 21% but also limits and/or eliminates certain deductions while creating new taxes on certain foreign sourced earnings. Since the Company has a September 30 fiscal year end, the lower U.S. corporate income tax rate will be phased in, resulting in a blended U.S. statutory federal rate of approximately 24.5% for the fiscal year ending September 30, 2018 and 21% for subsequent fiscal years. The reduction in the U.S. corporate tax rate requires the Company to remeasure its U.S. deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which can be 24.5% or 21%. The Tax Act also imposed a one-time transition tax on historical earnings of certain foreign subsidiaries that were not previously taxed by the U.S. Due to the Company’s fiscal year end, certain tax provisions of the new Tax Act will impact the Company in fiscal 2018 while others will be effective in subsequent years. For the nine months ended June 30, 2018, the estimated impact of the one-time transition tax on foreign earnings was $94.2, offset by the estimated benefit of remeasurement of U.S. deferred tax assets and liabilities of $76.8. The net impact of these transitional provisions resulted in a net charge of $17.4 for the year, which was included as a component of income tax expense. The Company has tax loss carryforwards and tax credits, a portion of which are expected be used to partially offset amounts payable over eight years related to the one-time transition tax on foreign earnings. The tax law changes included in the Tax Act are broad and complex. The final impact may differ from the Company's estimates, possibly materially, due to, among other things, changes in interpretation of the Tax Act, legislative action to address questions that arise because of the Tax Act, changes in accounting standards for income taxes or related interpretations in response to the Tax Act, or updates or changes to estimates the Company used to calculate the transition impacts, including impacts from changes to earnings estimates, foreign income tax estimates and foreign exchange rates. The Securities and Exchange Committee ("SEC") has issued rules under Staff Accounting Bulletin 118 that would allow for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts. As of June 30, 2018, amounts recorded for the Tax Act remain provisional for the transition tax, remeasurement of deferred taxes and reassessment of permanently reinvested earnings. On August 1, 2018, proposed Treasury Regulations were issued under Section 965 providing additional guidance and clarification on many of the provisions associated with the one-time transition tax, enacted in connection with the Tax Act. The Company has not yet evaluated these proposed regulations nor the impact they may have on the provisional amounts recorded for the transition tax as of June 30, 2018.

Income Taxes

For the three and nine months ended June 30, 2018, the Company had income tax expense of $9.3 and $56.4, respectively, on Earnings before income taxes of $21.4 and $140.3, respectively. The effective tax rate for the three and nine months ended June 30, 2018 was 42.9% and 40.2%, respectively. The difference between the federal statutory rate and the effective rate for the nine months ended June 30, 2018 is primarily due to a $17.4 net transitional charge resulting from the enactment of the Tax Act, as discussed below, and the impact of the goodwill impairment.

For the three and nine months ended June 30, 2017, the Company had an income tax expense of $10.6 and $45.8, respectively, on Earnings before income taxes of $65.5 and $199.9, respectively. The effective tax rate for the three and nine months ended June 30, 2017 was 16.2% and 22.9%, respectively. The difference between the federal statutory rate and the effective rate for both periods is due to a higher mix of earnings in lower tax rate jurisdictions and was favorably impacted by restructuring charges in higher tax rate jurisdictions.

U.S. Tax Reform

On December 22, 2017, the U.S. government enacted the Tax Act. This new comprehensive tax legislation reduces the U.S. federal corporate tax rate from 35% to 21% but also limits and/or eliminates certain deductions while creating new taxes on certain foreign sourced earnings. Since the Company has a September 30 fiscal year end, the lower U.S. corporate income tax rate will be phased in, resulting in a blended U.S. statutory federal rate of approximately 24.5% for the fiscal year ending September 30, 2018 and 21% for subsequent fiscal years. The reduction in the U.S. corporate tax rate requires the Company to remeasure its U.S. deferred tax assets and liabilities based on the rates at which they are expected to reverse in the future, which can be 24.5% or 21%. The Tax Act also imposed a one-time transition tax on historical earnings of certain foreign subsidiaries that were not previously taxed by the U.S.

Due to the Company’s fiscal year end, certain tax provisions of the new Tax Act will impact the Company in fiscal 2018 while others will be effective in subsequent years. For the nine months ended June 30, 2018, the estimated impact of the one-time transition tax on foreign earnings was $94.2, offset by the estimated benefit of remeasurement of U.S. deferred tax assets and liabilities of $76.8. The net impact of these transitional provisions resulted in a net charge of $17.4 for the year, which was included as a component of income tax expense. The Company has tax loss carryforwards and tax credits, a portion of which are expected be used to partially offset amounts payable over eight years related to the one-time transition tax on foreign earnings.

The tax law changes included in the Tax Act are broad and complex. The final impact may differ from the Company's estimates, possibly materially, due to, among other things, changes in interpretation of the Tax Act, legislative action to address questions that arise because of the Tax Act, changes in accounting standards for income taxes or related interpretations in response to the Tax Act, or updates or changes to estimates the Company used to calculate the transition impacts, including impacts from changes to earnings estimates, foreign income tax estimates and foreign exchange rates. The Securities and Exchange Committee ("SEC") has issued rules under Staff Accounting Bulletin 118 that would allow for a measurement period of up to one year after the enactment date of the Tax Act to finalize the recording of the related tax impacts. As of June 30, 2018, amounts recorded for the Tax Act remain provisional for the transition tax, remeasurement of deferred taxes and reassessment of permanently reinvested earnings.

On August 1, 2018, proposed Treasury Regulations were issued under Section 965 providing additional guidance and clarification on many of the provisions associated with the one-time transition tax, enacted in connection with the Tax Act. The Company has not yet evaluated these proposed regulations nor the impact they may have on the provisional amounts recorded for the transition tax as of June 30, 2018.