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Other Financial Data - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
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Other Financial Data [Abstract] |  |
Deferred revenue | $ 393 | $ 394
Taxes payable | 78 | 94
Other | 402 | 331
Total Other Current Liabilities | $ 873 | $ 819

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