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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2018
Revenue from Contract with Customer [Abstract] |
Net Contract Assets and Liabilities | Net contract assets were as follows:
| March 31, 2018 |  | January 1, 2017
Contract assets, included in prepaid and other current assets | $ | 20 |  |  | $ | 26 |
Contract liabilities, included in accrued liabilities | (1 | ) |  | (1 | )
Contract liabilities, included in other non-current liabilities | (7 | ) |  | (7 | )
Net contract asset | $ | 12 |  |  | $ | 18 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130551-203045 + Details
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- References No definition available. + Details
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