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Other Financial Data - Schedule of Other Current Assets (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Dec. 31, 2019
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Other Financial Data [Abstract] |  |
Cost to fulfill contracts with customers | $ 220 | $ 335
Prepaid expenses | 116 | 97
Taxes receivable | 131 | 88
Other | 58 | 82
Total | $ 525 | 602
Receivables from divested business |  | $ 4

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