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Other Financial Data - Schedule of Other Non-current Assets (Details) - USD ($) $ in Millions | Jun. 30, 2017 | Dec. 31, 2016
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Other Financial Data [Abstract] |  |
Investments | $ 122 | $ 119
Taxes receivable | 88 | 82
Other | 158 | 159
Total | $ 368 | $ 360

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