Acquisitions and Divestitures - Allocation of Purchase Price: Pacific Drilling Merger (Details) $ / shares in Units, shares in Thousands, $ in Thousands			1 Months Ended	11 Months Ended	12 Months Ended
	Oct. 03, 2022 USD ($) shares	Apr. 15, 2021 USD ($) $ / shares shares	Feb. 05, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Acquisition related costs			$ 0	$ 24,792	$ 84,668	$ 0
Liabilities assumed:
Gain on bargain purchase			$ 0	62,305	0	$ 0
Maersk Drilling Merger
Business Acquisition [Line Items]
Acquisition related costs					$ 33,100
Number of shares received by acquiree (in shares) | shares	60,100
Total purchase price consideration	$ 2,000,873
Assets acquired:
Cash and cash equivalents	172,205
Accounts receivable	250,251
Taxes receivable	20,603
Prepaid expenses and other current assets	41,068
Total current assets	484,127
Property and equipment, net	2,756,096
Other assets	69,713
Total assets acquired	3,332,927
Liabilities assumed:
Accounts payable	130,273
Accrued payroll and related costs	21,784
Taxes payable	38,218
Other current liabilities	41,253
Interest payable	800
Total current liabilities	361,458
Deferred income taxes	4,071
Noncurrent contract liabilities	237,703
Other liabilities	158,146
Total liabilities assumed	1,358,070
Net assets acquired	1,974,857
Purchase price consideration	$ 2,000,873
Pacific Drilling
Business Acquisition [Line Items]
Acquisition related costs				15,900
Pacific Drilling membership interests outstanding (in shares) | shares		2,500
Business acquisition, membership interest exchange ratio		6.366
Preliminary purchase price allocation, membership interests outstanding (in shares) | shares		15,915
Pacific Drilling warrants outstanding (in shares) | shares		441
Business acquisition, warrants exchange ratio		1.553
Preliminary purchase price allocation, warrants outstanding (in shares) | shares		685
Number of shares received by acquiree (in shares) | shares		16,600
Fair value of Noble Ordinary Shares on April 15, 2021 (in USD per share) | $ / shares		$ 21.55
Total purchase price consideration		$ 357,662
Assets acquired:
Cash and cash equivalents		54,970
Accounts receivable		17,457
Taxes receivable		1,585
Prepaid expenses and other current assets		14,081
Total current assets		88,093
Property and equipment, net		346,167
Assets held for sale		30,063
Other assets		457
Total assets acquired		464,780
Liabilities assumed:
Accounts payable		18,603
Accrued payroll and related costs		16,128
Taxes payable		1,951
Other current liabilities		2,900
Total current liabilities		39,582
Deferred income taxes		798
Other liabilities		4,433
Total liabilities assumed		44,813
Net assets acquired		419,967
Gain on bargain purchase		62,305		$ 62,300
Purchase price consideration		$ 357,662