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Earnings Per Common Share
9 Months Ended
Sep. 30, 2021
Earnings Per Common Share  
Earnings Per Common Share

14. Earnings Per Common Share

The computations of the basic and diluted per share amounts were as follows:

For the three months ended

For the nine months ended

September 30, 

September 30, 

    

2021

    

2020

    

2021

    

2020

(in millions, except per share data)

Net income

$

364.3

$

235.9

$

1,252.2

$

937.0

Subtract:

Net income attributable to noncontrolling interest

4.4

(0.1)

13.4

13.8

Total

$

359.9

$

236.0

$

1,238.8

$

923.2

Weighted-average shares outstanding:

Basic

268.0

274.8

270.7

274.7

Dilutive effects:

Stock options

1.3

0.4

1.2

0.3

Restricted stock units

2.2

1.5

2.0

1.3

Performance share awards

0.4

0.1

0.5

0.1

Diluted

271.9

276.8

274.4

276.4

Net income per common share:

Basic

$

1.34

$

0.86

$

4.58

$

3.36

Diluted

$

1.32

$

0.85

$

4.51

$

3.34

The calculation of diluted earnings per share for the three and nine months ended September 30, 2021 and 2020, excludes the incremental effect related to certain outstanding stock-based compensation grants due to their anti-dilutive effect.