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v3.19.3.a.u2

Revenue (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Product revenue |  |  |
Disaggregation of revenues |  |  |
Total revenue | 57.00% | 53.00% | 55.00%
Rental revenue |  |  |
Disaggregation of revenues |  |  |
Total revenue | 22.00% | 25.00% | 23.00%
Field service and other revenue |  |  |
Disaggregation of revenues |  |  |
Total revenue | 21.00% | 22.00% | 22.00%

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- Definition Represents the percentage of total revenues. + References No definition available. + Details
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