Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2025	Apr. 18, 2025
Document Information [Line Items]
Entity Current Reporting Status	Yes
Entity Registrant Name	OCEANEERING INTERNATIONAL INC
Entity Tax Identification Number	95-2628227
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2025
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100,594,528
Entity Central Index Key	0000073756
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q1
Amendment Flag	false
Document Type	10-Q
Entity Information [Line Items]
Entity Address, Address Line One	5875 North Sam Houston Parkway West, Suite 400
Entity Address, City or Town	Houston,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77086
City Area Code	713
Local Phone Number	329-4500
Entity Incorporation, State or Country Code	DE
Entity File Number	1-10945
Entity Listings [Line Items]
Title of 12(b) Security	Common stock, par value $0.25 per share
Trading Symbol	OII
Security Exchange Name	NYSE