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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] |
| Three Months Ended
| March 31,
| 2020 |  | 2019
Revenue recognized over time | $ | 1,475 |  |  | $ | 1,365 |
Revenue recognized at a point in time | 1,282 |  |  | 1,390 |
Total revenue | $ | 2,757 |  |  | $ | 2,755 |
Net Contract Assets and Liabilities | Net contract assets were as follows:
| March 31, 2020 |  | December 31, 2019
Contract assets included in prepaid and other current assets | $ | 32 |  |  | $ | 30 |
Contract liabilities included in accrued liabilities | (4 | ) |  | (5 | )
Net contract asset | $ | 28 |  |  | $ | 25 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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- References No definition available. + Details
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