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Awards Granted to Company Employees and Non-employee Directors Under the 2007 Equity Incentive Compensation Plan (Detail) (USD $) | 6 Months Ended
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Mar. 31, 2014
Non-qualified stock options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted | 376,809 |
Weighted-Average Grant Date Fair Value | $ 44.23 |
Weighted-Average Exercise Price | $ 200.19 |
Restricted stock awards (RSAs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted | 537,244 |
Weighted-Average Grant Date Fair Value | $ 198.75 |
Restricted stock units (RSUs) |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted | 224,838 |
Weighted-Average Grant Date Fair Value | $ 197.67 |
Performance-based shares |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Granted | 278,451 | [1]
Weighted-Average Grant Date Fair Value | $ 225.46 | [1]
[1] | Represents the maximum number of performance-based shares which could be earned.

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Details
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- Definition Net number of share options (or share units) granted during the period. + 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)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + Details
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