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Earnings Per Share | 6 Months Ended
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Jun. 30, 2025
Earnings Per Share [Abstract] |
Earnings Per Share | The calculations of basic and diluted EPS are based on the weighted average number of shares of common stock and potential common stock outstanding during the period. Diluted EPS includes the incremental effects of the various long-term incentive compensation plans and ATM forward sale agreements under the treasury stock method when the impact would be dilutive (See Note 6, "Equity"). We use the two-class method of computing earnings per share because we have participating securities in the form of non-vested restricted stock units with a non-forfeitable right to dividend equivalents, for which vesting is predicated solely on the passage of time. The calculation of earnings per share using the two-class method excludes income attributable to these participating securities from the numerator and excludes the dilutive impact of those shares from the denominator. The following table presents the calculation of our basic and diluted EPS:
| Three Months Ended June 30, |  | Six Months Ended June 30,
(in millions, except per share amounts) | 2025 |  | 2024 |  | 2025 |  | 2024
Numerator: |  |  |  |  |  |  |
Net Income Available to Common Shareholders | $ | 102.2 |  |  | $ | 85.8 |  |  | $ | 577.0 |  |  | $ | 430.1 |
Less: Income allocated to participating securities | 0.3 |  |  | 0.4 |  |  | 1.1 |  |  | 0.7 |
Net Income Available to Common Shareholders - Basic | 101.9 |  |  | 85.4 |  |  | 575.9 |  |  | 429.4 |
Net Income Available to Common Shareholders - Diluted | $ | 101.9 |  |  | $ | 85.4 |  |  | $ | 575.9 |  |  | $ | 429.4 |
Denominator: |  |  |  |  |  |  |
Average common shares outstanding - Basic | 471.0 |  |  | 448.5 |  |  | 470.6 |  |  | 448.2 |
Dilutive potential common shares: |  |  |  |  |  |  |
Shares contingently issuable under employee stock plans | 1.0 |  |  | 0.7 |  |  | 1.2 |  |  | 0.8 |
Shares restricted under employee stock plans | 0.1 |  |  | 0.3 |  |  | 0.5 |  |  | 0.3 |
ATM forward sale agreements | — |  |  | 0.7 |  |  | — |  |  | 0.5 |
Average Common Shares - Diluted | 472.1 |  |  | 450.2 |  |  | 472.3 |  |  | 449.8 |
Earnings per common share: |  |  |  |  |  |  |
Basic | $ | 0.22 |  |  | $ | 0.19 |  |  | 1.22 |  | 0.96
Diluted | $ | 0.22 |  |  | $ | 0.19 |  |  | 1.22 |  | 0.95

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/260/tableOfContent Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-3 + Details
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