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PROPERTIES AND ACCUMULATED DEPRECIATION
12 Months Ended
Dec. 31, 2021
Property, Plant and Equipment [Abstract]  
PROPERTIES AND ACCUMULATED DEPRECIATION PROPERTIES AND ACCUMULATED DEPRECIATION
 December 31,
(Dollars in millions)20212020
Properties
Land$150 $163 
Buildings (1)
1,458 1,468 
Machinery and equipment10,449 11,494 
Construction in progress (1)
623 406 
Properties and equipment at cost$12,680 $13,531 
Less:  Accumulated depreciation7,684 7,982 
Net properties$4,996 $5,549 
(1)December 31, 2020 is revised from Note 3, "Properties and Accumulated Depreciation", to the Company's 2020 Annual Report on Form 10-K, which reported Buildings as $1,824 million and Construction in progress as $50 million.

Depreciation expense was $426 million, $445 million, and $450 million for 2021, 2020, and 2019, respectively.

Cumulative construction-period interest of $99 million and $100 million, reduced by accumulated depreciation of $45 million and $41 million, is included in net properties at December 31, 2021 and 2020, respectively.

Eastman capitalized $5 million of interest in 2021, and $4 million of interest in both 2020 and 2019.