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intangible Assets (Tables)
12 Months Ended
Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Gross Carrying Amounts and Accumulated Amortization of Finite-Lived Intangible Assets
Customer relationships
11 - 18
Trade names
8 - 27
Technology
6 - 8
Long-term supply contracts15
Patents8
Gross carrying amounts and accumulated amortization of finite-lived intangible assets by major class were as follows:

 December 31, 2020December 31, 2019
 GrossAccumulated amortizationNetGrossAccumulated amortizationNet
Customer relationships$1,661 $(470)$1,191 $1,621 $(331)$1,290 
Trade names565 (65)500 541 (40)501 
Technology165 (67)98 158 (41)117 
Long term supply contracts142 (55)87 150 (48)102 
Patents16 (12)14 (9)
$2,549 $(669)$1,880 $2,484 $(469)$2,015