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Equity Method Investments (Tables)
12 Months Ended
Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Equity Method Investments
Below is a list of the entities accounted for under the equity method and recorded in other noncurrent assets on our Consolidated Balance Sheet:
% of OwnershipCarrying Value
(Dollars in millions)2021202020212020
Advanced Acoustics Concepts, LLC51 %51 %$27 $25