Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Aug. 05, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Trading Symbol	DO
Entity Registrant Name	DIAMOND OFFSHORE DRILLING, INC.
Entity Central Index Key	0000949039
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		103,213,055
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Entity Current Reporting Status	Yes
Entity File Number	1-13926
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	76-0321760
Entity Address, Address Line One	777 N. Eldridge Parkway, Suite 1100
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77079
City Area Code	281
Local Phone Number	492-5300
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Bankruptcy Proceedings, Reporting Current	true