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Properties, Plant and Equipment
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Properties, Plant and Equipment
Properties, Plant and Equipment1
 
At December 31
 
 
Year ended December 31
 
 
Gross Investment at Cost
 
 
Net Investment
 
 
Additions at Cost2
 
 
Depreciation Expense3
 
 
2018

2017

2016


2018

2017

2016


2018

2017

2016


2018

2017

2016

Upstream















   United States
$
88,155

$
84,602

$
83,929


$
39,526

$
38,722

$
39,710


$
6,434

$
4,995

$
4,432


$
5,328

$
5,527

$
6,576

   International
215,329

224,211

214,557


113,603

123,191

125,502


4,865

7,934

12,084


12,726

12,096

11,247

Total Upstream
303,484

308,813

298,486


153,129

161,913

165,212


11,299

12,929

16,516


18,054

17,623

17,823

Downstream















   United States
24,685

23,598

22,795


10,838

10,346

10,196


1,259

907

528


751

753

956

   International
7,237

7,094

9,350


3,023

3,074

4,094


278

306

375


282

282

332

Total Downstream
31,922

30,692

32,145


13,861

13,420

14,290


1,537

1,213

903


1,033

1,035

1,288

All Other















   United States
4,667

4,798

5,263


2,186

2,341

2,635


224

218

198


320

677

328

   International
171

182

183


31

38

49


6

4

6


12

14

18

Total All Other
4,838

4,980

5,446


2,217

2,379

2,684


230

222

204


332

691

346

Total United States
117,507

112,998

111,987


52,550

51,409

52,541


7,917

6,120

5,158


6,399

6,957

7,860

Total International
222,737

231,487

224,090


116,657

126,303

129,645


5,149

8,244

12,465


13,020

12,392

11,597

Total
$
340,244

$
344,485

$
336,077


$
169,207

$
177,712

$
182,186


$
13,066

$
14,364

$
17,623


$
19,419

$
19,349

$
19,457

1 
Other than the United States and Australia, no other country accounted for 10 percent or more of the company’s net properties, plant and equipment (PP&E) in 2018. Australia had PP&E of $53,768, $55,514 and $53,962 in 2018, 2017 and 2016, respectively.
2 
Net of dry hole expense related to prior years’ expenditures of $343, $42 and $175 in 2018, 2017 and 2016, respectively.
3 
Depreciation expense includes accretion expense of $654, $668 and $749 in 2018, 2017 and 2016, respectively, and impairments of $735, $1,021 and $3,186 in 2018, 2017 and 2016, respectively.