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Properties, Plant and Equipment
 12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
Properties, Plant and Equipment
Properties, Plant and Equipment1
At December 31Year ended December 31
Gross Investment at CostNet Investment
Additions at Cost2
Depreciation Expense3
202120202019202120202019202120202019202120202019
Upstream
United States$93,393 $96,555 $82,117 $36,027 $38,175 $31,082 $4,520 $13,067 $7,751 $5,675 $6,841 $15,222 
International202,757 209,846 206,292 94,770 102,010 102,639 2,349 11,069 3,664 10,824 11,121 12,618 
Total Upstream296,150 306,401 288,409 130,797 140,185 133,721 6,869 24,136 11,415 16,499 17,962 27,840 
Downstream
United States26,888 26,499 25,968 10,766 11,101 11,398 543 638 1,452 833 851 869 
International8,134 7,993 7,480 3,300 3,395 3,114 234 573 355 296 283 256 
Total Downstream35,022 34,492 33,448 14,066 14,496 14,512 777 1,211 1,807 1,129 1,134 1,125 
All Other
United States4,729 4,195 4,719 2,078 1,916 2,236 143 194 324 290 403 243 
International144 144 146 20 21 25 7 5 9 7 9 10 
Total All Other4,873 4,339 4,865 2,098 1,937 2,261 150 199 333 297 412 253 
Total United States125,010 127,249 112,804 48,871 51,192 44,716 5,206 13,899 9,527 6,798 8,095 16,334 
Total International211,035 217,983 213,918 98,090 105,426 105,778 2,590 11,647 4,028 11,127 11,413 12,884 
Total$336,045 $345,232 $326,722 $146,961 $156,618 $150,494 $7,796 $25,546 $13,555 $17,925 $19,508 $29,218 
1Other 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 2021. Australia had PP&E of $46,395, $48,060 and $51,359 in 2021, 2020 and 2019, respectively. Gross Investment at Cost, Net Investment and Additions at Cost for 2020 each include $16,703 associated with the Noble acquisition.
2Net of dry hole expense related to prior years’ expenditures of $35, $709 and $49 in 2021, 2020 and 2019, respectively.
3Depreciation expense includes accretion expense of $616, $560 and $628 in 2021, 2020 and 2019, respectively, and impairments of $414, $2,792 and $10,797 in 2021, 2020 and 2019, respectively.