Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Loss on Impairment (Details)	1 Months Ended	2 Months Ended	3 Months Ended
Loss on Impairment (Details)	Feb. 05, 2021 USD ($)	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($) floater
Property, Plant and Equipment [Line Items]
Loss on impairment	$ 0	$ 0	$ 1,119,517,000
Number of impairment oil and gas properties \| floater			4
Capital Spare Equipment
Property, Plant and Equipment [Line Items]
Loss on impairment			$ 5,500,000
Noble Bully I, Noble Bully II, Noble Danny Adkins and Noble Jim Day \| Drillships
Property, Plant and Equipment [Line Items]
Loss on impairment			$ 1,100,000,000