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Share-Based Compensation - Schedule of stock-based compensation costs (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Mar. 31, 2015
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Mar. 31, 2014
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Mar. 31, 2015
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Mar. 31, 2014
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| Compensation Related Costs [Abstract] | ||||
| Share-based compensation costs | $ 4.1us-gaap_AllocatedShareBasedCompensationExpense | $ 3.4us-gaap_AllocatedShareBasedCompensationExpense | $ 6.3us-gaap_AllocatedShareBasedCompensationExpense | $ 5.1us-gaap_AllocatedShareBasedCompensationExpense |
| Less impact of income tax benefit | 1.5us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | 1.3us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | 2.3us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | 1.9us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense |
| Share-based compensation costs, net of tax | $ 2.6us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | $ 2.1us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | $ 4.0us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | $ 3.2us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax |
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- Definition
Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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- Details
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- Definition
The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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