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Supplemental Financial Information Schedule of Revenue by Major Customers, by Reporting Segments (Details) - Revenue Benchmark [Member] - Customer Concentration Risk | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk, percentage | 100.00% | 100.00%
Total S.A. |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk, percentage | 16.00% | 18.00%
Saudi Aramco |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk, percentage | 10.00% | 13.00%
Other |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk, percentage | 74.00% | 69.00%
Floaters | Total S.A. |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Concentration risk, percentage | 89.00% |

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