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Other Financial Data - Schedule of Other Non-current Assets (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
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Other Financial Data [Abstract] |  |
Cost to obtain contracts with customers | $ 172 | $ 171
Taxes receivable | 100 | 102
Leases | 101 | 100
Investments | 51 | 53
Other | 124 | 144
Total | $ 548 | $ 570
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