Earnings Per Share (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2013
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Mar. 31, 2012
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Numerator: | ||||
Net income | $ 111.0 | $ 40.6 | $ 177.3 | $ 68.3 |
Interest expense and amortization of issuance costs associated with convertible senior notes | 5.8 | 0 | 11.5 | 0 |
Numerator for diluted earnings per share after assumed conversions | $ 116.8 | $ 40.6 | $ 188.8 | $ 68.3 |
Denominator: | ||||
Denominator for basic earnings per share - weighted average common shares | 321.7 | 317.6 | 321.4 | 317.0 |
Effect of dilutive securities: | ||||
Employee stock awards | 5.1 | 2.5 | 4.7 | 1.3 |
Incremental Common Shares Attributable to Conversion of Debt Securities | 38.6 | 0 | 38.6 | 0 |
Denominator for diluted earnings per share - adjusted weighted average common shares | 365.4 | 320.1 | 364.7 | 318.3 |
Earnings (Loss) Per Share [Abstract] | ||||
Number of shares excluded from computation of earnings per share | 5.6 | 8.7 |
X | ||||||||||
- Details
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X | ||||||||||
- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The after-tax amount of interest recognized in the period associated with any convertible debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Details
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X | ||||||||||
- Definition
Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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X | ||||||||||
- Definition
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Details
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- Definition
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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