Acquisitions and Divestitures - Business Combination with Maersk Drilling (Details) $ / shares in Units, shares in Millions, $ in Millions	Oct. 03, 2022 USD ($) $ / shares	Sep. 30, 2022 $ / shares shares	Dec. 31, 2021 $ / shares
Business Acquisition [Line Items]
Common stock, par value (in usd per share)		$ 0.00001	$ 0.00001
Subsequent Event
Business Acquisition [Line Items]
Common stock, par value (in usd per share)	$ 0.00001
Maersk Drilling Merger | Subsequent Event
Business Acquisition [Line Items]
Business combination, percentage of issued and outstanding shares acquired (more than)	90.00%
Business combination, shares exchange ratio	1.6137
Business combination, consideration in cash election per share (in USD per share)	$ 1,000
Business combination, consideration in cash election amount | $	$ 50
Noble Corp
Business Acquisition [Line Items]
Common stock, par value (in usd per share)		$ 0.00001
Warrant outstanding (in shares) | shares		14.5