Three Months Ended

Nine Months Ended

September 30,

Millions, Except Per Share Amounts

2022

2021

2022

2021

Net income

$

1,895

$

1,673

$

5,360

$

4,812

Weighted-average number of shares outstanding:

Basic

620.4

648.7

626.1

658.3

Dilutive effect of stock options

0.5

0.8

0.7

0.8

Dilutive effect of retention shares and units

0.6

0.8

0.6

0.8

Diluted

621.5

650.3

627.4

659.9

Earnings per share – basic

$

3.05

$

2.58

$

8.56

$

7.31

Earnings per share – diluted

$

3.05

$

2.57

$

8.54

$

7.29

Stock options excluded as their inclusion would be anti-dilutive

0.3

0.4

0.3

0.3