Stock-Based Compensation (Details)	9 Months Ended
Jun. 30, 2017 $ / shares shares	Jun. 30, 2016 $ / shares shares
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Stock Options Granted \| shares	2,841,686	961,705
Share-based Compensation, Stock Options Weighted Average Grant Date Fair Value \| $ / shares	$ 7.81	$ 13.14
Share-based Compensation, Risk Free Interest Rate - Minimum	1.23%
Share-based Compensation, Risk Free Interest Rate - Maximum	1.93%
Share-based Compensation, Expected Life of Option (Years)		6 years 146 days
Share-based Compensation, Risk Free Interest Rate		1.64%
Share-based Compensation, Expected Volatility of the Company's Stock	24.60%	36.00%
Share-based Compensation, Expected Dividend Yield on the Company's stock	2.21%	2.11%
Employee Stock Option [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Expected Life of Option (Years)	4 years 9 months
Employee Stock Option [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Expected Life of Option (Years)	6 years 6 months
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Equity Instruments Other than Options, Granted \| shares	15,693	54,749
Share-based Compensation, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value \| $ / shares	$ 8.28	$ 13.15
Share Based Compensation, Award Modificaton, Conversion Ratio	1.085317
Non Vested Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Equity Instruments Other than Options, Granted \| shares	1,671,677	2,290,575
Share-based Compensation, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value \| $ / shares	$ 41.75	$ 43.68
Share Based Compensation, Award Modificaton, Conversion Ratio	1.085317
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation, Equity Instruments Other than Options, Granted \| shares	846,725	0
Share-based Compensation, Equity Instruments Other than Options, Weighted Average Grant Date Fair Value \| $ / shares	$ 48.40	$ 0.00
Share-based Compensation, Risk Free Interest Rate	1.40%
Share-based Compensation, Expected Volatility of the Company's Stock	21.00%

Share Based Compensation, Award Modificaton, Conversion Ratio

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

No definition available.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Net number of share options (or share units) granted during the period.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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