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Three Months Ended

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Six Months Ended

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June 30, 

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June 30, 

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  ​ ​ ​

2026

  ​ ​ ​

2025

  ​ ​ ​

2026

  ​ ​ ​

2025

Number of common shares outstanding at end of period

400.0

402.6

400.0

402.6

Effect of using weighted average common shares outstanding

1.5

—

2.3

(0.1)

Weighted average basic common shares outstanding

401.5

402.6

402.3

402.5

Dilutive effect of equity-based compensation awards and other contingently issuable shares

0.9

1.7

1.0

1.5

Weighted average diluted common shares outstanding

402.4

404.3

403.3

404.0

Potentially issuable shares

3.9

4.3

3.9

4.3

Number of anti-dilutive potentially issuable shares excluded from diluted common shares outstanding

1.5

0.9

1.6

1.2