($ in millions except per share amounts)

​

​

​

​

​

​

​

​

​

For the year ended December 31:

2022

2021

2020

Weighted-average number of shares on which earnings per share calculations are based

​

​

​

​

Basic

902,664,190

​

895,990,771

890,348,679

Add—incremental shares under stock-based compensation plans

7,593,455

​

6,883,290

4,802,940

Add—incremental shares associated with contingently issuable shares

2,011,417

​

1,766,940

1,412,352

Assuming dilution

912,269,062

​

904,641,001

896,563,971

Income from continuing operations

​

$

1,783

​

$

4,712

​

$

3,932

Income/(loss) from discontinued operations, net of tax

​

(143)

​

1,030

​

1,658

Net income on which basic earnings per share is calculated

​

$

1,639

​

$

5,743

​

$

5,590

Income from continuing operations

​

$

1,783

​

$

4,712

​

$

3,932

Net income applicable to contingently issuable shares

​

—

​

—

​

(2)

Income from continuing operations on which diluted earnings per share is calculated

​

$

1,783

​

$

4,712

​

$

3,930

Income/(loss) from discontinued operations, net of tax, on which basic and diluted earnings per share is calculated

​

(143)

​

1,030

​

1,658

Net income on which diluted earnings per share is calculated

​

$

1,639

​

$

5,743

​

$

5,588

Earnings/(loss) per share of common stock

​

​

​

​

​

​

Assuming dilution

​

​

​

​

​

​

Continuing operations

​

$

1.95

​

$

5.21

​

$

4.38

Discontinued operations

​

(0.16)

​

1.14

​

1.85

Total

​

$

1.80

​

$

6.35

​

$

6.23

Basic

​

​

​

​

​

​

Continuing operations

​

$

1.97

​

$

5.26

​

$

4.42

Discontinued operations

​

(0.16)

​

1.15

​

1.86

Total

​

$

1.82

​

$

6.41

​

$

6.28

​

​

​

​

​

​

​

​

​

​