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Supplemental cash flow information
 12 Months Ended
Dec. 31, 2023
Supplemental Cash Flow Elements [Abstract]  
Supplemental cash flow information
(14)
Supplemental cash flow information

A summary of supplemental cash flow information follows (in millions).

 

 

 

2023

 

 

2022

 

 

2021

 

Cash paid during the year for:

 

 

 

 

 

 

 

 

 

Income taxes

 

$

7,765

 

 

$

4,236

 

 

$

5,412

 

Interest:

 

 

 

 

 

 

 

 

 

Insurance and other

 

 

1,272

 

 

 

1,150

 

 

 

1,227

 

Railroad, utilities and energy

 

 

3,725

 

 

 

3,195

 

 

 

3,162

 

Non-cash investing and financing activities:

 

 

 

 

 

 

 

 

 

Liabilities assumed in connection with business acquisitions

 

 

10,938

 

 

 

24,186

 

 

 

102

 

Operating lease liabilities arising from obtaining right-of-use assets

 

 

1,645

 

 

 

1,118

 

 

 

687