Segment Information - Long-lived Assets By Geographic Areas (Details) - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | $ 2,792.4 | $ 2,823.2 | $ 2,578.3 |
| Latin America | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | 953.1 | 961.0 | |
| South East Asia | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | 796.9 | 809.9 | |
| West Africa | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | 429.2 | 434.8 | |
| Middle East | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | 358.4 | 366.6 | |
| North Africa | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | 163.7 | 0.0 | |
| Europe | |||
| Revenues from External Customers and Long-Lived Assets [Line Items] | |||
| Jack-up drilling rigs, net | $ 91.1 | $ 250.9 |