Income (Loss) Per Share - Computation of Basic and Diluted Earnings Per Share for Noble-UK (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		8 Months Ended	9 Months Ended
	Feb. 05, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2022
Basic
Net income (loss)	$ 250,228	$ 33,585	$ (23,665)	$ (21,454)	$ 33,986
Diluted
Net income (loss)	$ 250,228	$ 33,585	$ (23,665)	$ (21,454)	$ 33,986
Denominator:
Weighted average shares outstanding - basic (in shares)	251,115	70,318	66,623	61,847	69,260
Dilutive effect of share-based awards (in shares)	5,456	3,388	0	0	3,388
Dilutive effect of warrants (in shares)	0	8,220	0	0	8,718
Weighted average shares outstanding - diluted (in shares)	256,571	81,926	66,623	61,847	81,366
Basic:
Net income (loss) (in usd per share)	$ 1.00	$ 0.48	$ (0.36)	$ (0.35)	$ 0.49
Diluted:
Net income (loss) (in usd per share)	$ 0.98	$ 0.41	$ (0.36)	$ (0.35)	$ 0.42