Acquisitions and Divestitures - Allocation of Purchase Price: Maersk Drilling (Details) - USD ($) $ in Thousands		6 Months Ended
	Oct. 03, 2022	Jun. 30, 2023	Dec. 31, 2022
Liabilities assumed:
Goodwill acquired		$ 14,626	$ 26,016
Maersk Drilling Merger
Business Acquisition [Line Items]
Fair value of Noble shares transferred to legacy Maersk Drilling shareholders	$ 1,793,351
Cash paid to legacy Maersk Drilling shareholders	887
Fair value of replacement Maersk Drilling RSU Awards attributable to the purchase price	6,780
Deal Completion Bonus	6,177
Fair Value of Compulsory Purchase	193,678
Total purchase price consideration	2,000,873
Assets acquired:
Cash and cash equivalents	172,205
Accounts receivable, net	250,251
Taxes receivable	20,603
Prepaid expenses and other current assets	43,168
Total current assets	486,227
Intangible assets	22,991
Property, plant and equipment, net	2,756,096
Other assets	94,882
Total assets acquired	3,360,196
Liabilities assumed:
Current maturities of long-term debt	129,130
Accounts payable	130,273
Accrued payroll and related costs	23,884
Taxes payable	38,218
Interest payable	800
Other current liabilities	41,253
Total current liabilities	363,558
Long-term debt	596,692
Deferred income taxes	4,071
Noncurrent contract liabilities	237,703
Other liabilities	171,925
Total liabilities assumed	1,373,949
Net assets acquired	1,986,247
Goodwill acquired	14,626
Purchase price consideration	$ 2,000,873
Net increase to deferred tax assets		25,200
Net increase to reserves for uncertain tax positions		13,800
Decrease of goodwill		$ 11,400