Document and Entity Information Document - shares	6 Months Ended
	Jun. 30, 2022	Jul. 22, 2022
Document And Entity Information [Abstract]
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2022
Document Transition Report	false
Entity File Number	1-10945
Entity Registrant Name	OCEANEERING INTERNATIONAL INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-2628227
Entity Address, Address Line One	11911 FM 529
Entity Address, City or Town	Houston,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77041
City Area Code	713
Local Phone Number	329-4500
Title of 12(b) Security	Common stock, par value $0.25 per share
Trading Symbol	OII
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		100,259,525
Entity Central Index Key	0000073756
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Amendment Flag	false
Document Type	10-Q
Entity Filer Category	Large Accelerated Filer