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Other Financial Data - Other Current Assets (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Current Assets [Abstract]
Current contract cost assets	$ 61	$ 30	$ 23
Contractor receivables	47	7
Tax-related deposits (Note 7)	33	41
Other	242	181
Other current assets	$ 383	$ 259

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