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Other Financial Data - Schedule of Other Non-current Assets (Details) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
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Other Financial Data [Abstract] |  |
Investments | $ 57 | $ 119
Taxes receivable | 84 | 82
Other | 166 | 159
Total Other Non-Current Assets | $ 307 | $ 360

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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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