($ 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