Right of use assets and lease liabilities - Summary of carrying amounts of the Company's right of use assets and lease and the movements during the years (Parenthetical) (Detail) - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2025

Dec. 31, 2024

Disclosure of quantitative information about right-of-use assets [line items]

Depreciation, right-of-use assets

$ 77,780

^[1]

$ 44,800

^[2]

Drilling Services [Member]

Disclosure of quantitative information about right-of-use assets [line items]

Depreciation, right-of-use assets

66,189

35,538

Borrowing costs capitalised

$ 9,878

$ 3,981

[1]	Including the depreciation of drilling services capitalized as “Works in progress” for 66,189.
[2]	Including the depreciation of drilling services capitalized as “Works in progress” for 35,538.