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Other Financial Information - Other Current Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Prepaid Expense and Other Assets, Current [Abstract] |  |
Prepaid expenses | $ 46 | $ 50
Contract acquisition costs | 38 | 43
Contract fulfillment costs | 30 | 31
Receivable In Like-Kind Exchange | 0 | 56
Other | 6 | 7
Total other current assets | 120 | 187
Other | $ 654 | $ 670

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