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Fixed Assets
12 Months Ended
Dec. 31, 2019
Property Plant And Equipment [Abstract]  
Fixed Assets

5. Fixed Assets

Fixed assets consist of the following:

 

(Stated in millions)

 

 

 

 

 

 

 

 

 

 

2019

 

 

2018

 

Land

$

483

 

 

$

462

 

Buildings & improvements

 

5,156

 

 

 

5,534

 

Machinery & equipment

 

29,370

 

 

 

32,668

 

 

 

35,009

 

 

 

38,664

 

Less: Accumulated depreciation

 

25,739

 

 

 

26,985

 

 

$

9,270

 

 

$

11,679

 

 

The estimated useful lives of Buildings & improvements are primarily 25 to 30 years. The estimated useful lives of Machinery & equipment are primarily 5 to 10 years.

Depreciation expense, which is recorded on a straight-line basis, was $2.0 billion, $2.1 billion and $2.3 billion in 2019, 2018 and 2017, respectively.