2021

2020

Basic earnings per common share:

Net earnings allocable to common shares⁽¹⁾

$

1,110

$

1,243

Weighted-average common shares

266

262

Basic earnings per common share

$

4.17

$

4.75

Diluted earnings per common share:

Net earnings allocable to common shares⁽¹⁾

$

1,110

$

1,243

Weighted-average common shares

266

262

Dilutive effect of share-based awards

5

1

Weighted-average diluted shares

271

263

Diluted earnings per common share

$

4.09

$

4.72

Anti-dilutive options excluded from diluted earnings per

   common share

2.7

9.0

⁽¹⁾

Net earnings available to participating securities were immaterial in all periods presented.