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v3.25.3

Long-Lived Assets (Acquisitions) (Details) - USD ($) shares in Millions, $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024
Acquisition |  |  |  |
Property and equipment, net |  | $ 12,688 | $ 15,831 |
Cash and cash equivalents |  | 833 | 560 |
Accounts receivable |  | $ 574 | $ 564 |
8.00% Senior Notes due February 2027 |  |  |  |
Acquisition |  |  |  |
Debt instrument interest rate stated percentage | 8.00% | 8.00% |  | 8.00%
Orion/Transocean Norge | 8.00% Senior Notes due February 2027 |  |  |  |
Acquisition |  |  |  |
Debt instrument interest rate stated percentage | 8.00% |  |  |
Orion/Transocean Norge |  |  |  |
Acquisition |  |  |  |
Asset acquisition, consideration transferred | $ 431 |  |  |
Newly issued shares in asset acquisition (in shares) | 55.5 |  |  |
Property and equipment, net | $ 517 |  |  |
Cash and cash equivalents | 5 |  |  |
Accounts receivable | 4 |  |  |
Orion/Transocean Norge | 8.00% Senior Notes due February 2027 |  |  |  |
Acquisition |  |  |  |
Debt instrument face value | $ 130 |  |  |
Debt instrument interest rate stated percentage | 8.00% |  |  |
Orion/Transocean Norge | Orion/Transocean Norge |  |  |  |
Acquisition |  |  |  |
Equity ownership (as a percent) | 67.00% |  |  |

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