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v3.23.1

Supplemental Financial Information Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | $ 430.1 | $ 318.4
Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 430.1 | 318.4
US Gulf Of Mexico | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 76.0 | 50.6
UNITED KINGDOM | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 53.5 | 65.6
AUSTRALIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 50.6 | 12.1
SAUDI ARABIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 39.3 | 38.1
Other Geographic Areas | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 210.7 | 152.0
Floaters | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 214.8 | 99.7
Floaters | US Gulf Of Mexico | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 41.7 | 20.6
Floaters | UNITED KINGDOM | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 0.0 | 0.0
Floaters | AUSTRALIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 37.7 | 12.0
Floaters | SAUDI ARABIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 0.0 | 0.0
Floaters | Other Geographic Areas | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 135.4 | 67.1
Jackups | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 169.8 | 180.7
Jackups | US Gulf Of Mexico | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 8.2 | 6.7
Jackups | UNITED KINGDOM | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 53.5 | 65.6
Jackups | AUSTRALIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 12.9 | 0.1
Jackups | SAUDI ARABIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 19.9 | 23.5
Jackups | Other Geographic Areas | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 75.3 | 84.8
Managed Rigs | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 45.5 | 38.0
Managed Rigs | US Gulf Of Mexico | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 26.1 | 23.3
Managed Rigs | UNITED KINGDOM | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 0.0 | 0.0
Managed Rigs | AUSTRALIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 0.0 | 0.0
Managed Rigs | SAUDI ARABIA | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | 19.4 | 14.6
Managed Rigs | Other Geographic Areas | Revenue Benchmark [Member] | Geographic Concentration Risk |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
OPERATING REVENUES | $ 0.0 | $ 0.1

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