Equity Method Investments - Schedule of Equity Method Investments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Advanced Acoustics Concepts, LLC
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 27	$ 25
Advanced Acoustics Concepts, LLC
Schedule of Equity Method Investments [Line Items]
% of Ownership	51.00%	51.00%

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Balance Type:	debit
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