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Share-based Payments (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 9 Months Ended |
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Sep. 30, 2015
Stock options, weighted average exercise price |  |  |
Vesting period | 3 years |  |
Recognized compensation expense | $ 56.2 | $ 98.1 |
Accelerated equity award |  | 43.9 |
Accelerated settlement Of Common Stock |  | 17.6 |
Award settlement Of Cash |  | $ 26.3 |
Unrecognized compensation expense | $ 113.2 |  | $ 115.5
Employee Stock Option |  |  |
Shares of stock under options |  |  |
Balance at the beginning of the period (in shares) | 1.3 | 1.6 |
Exercised (in shares) | (0.4) | (0.3) |
Balance at the end of the period (in shares) | 0.9 | 1.3 |
Vested and expected to vest in the future at the end of the period (in shares) | 0.9 | 1.3 |
Stock options, weighted average exercise price |  |  |
Balance at the beginning of the period (in dollars per share) | $ 28.26 | $ 27.69 |
Exercised (in dollars per share) | 23.78 | 25.02 |
Balance at the end of the period (in dollars per share) | 30.30 | 28.22 |
Vested and expected to vest in the future at the end of the period (in dollars per share) | $ 30.30 | 28.22 |
Performance Earnings Program |  |  |
Stock options, weighted average exercise price |  |  |
Vesting period | 3 years |  |
Weighted average grant-date fair value of stock options granted (in dollars per share) | $ 29.91 | 32.32 |
Restricted Stock Units (RSUs) |  |  |
Stock options, weighted average exercise price |  |  |
Weighted average grant-date fair value of stock options granted (in dollars per share) | $ 29.81 | $ 31.06 |
Granted (in shares) |  | 2.6 |
Granted (in dollars per share) |  | $ 30.04 |

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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. + References Reference 1: 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.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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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). + 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 (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -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 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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 (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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