Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Restricted Stock Units (RSUs) [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Restricted Stock Units (RSUs) [Member]	Retained Earnings [Member]	Currency Translation Adjustments [Member]	Oceaneering Shareholders' Equity [Member]	Oceaneering Shareholders' Equity [Member] Restricted Stock Units (RSUs) [Member]	Noncontrolling Interest [Member]	Treasury Stock, Common	Treasury Stock, Common Restricted Stock Units (RSUs) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stockholders' Equity Attributable to Parent								$ 628,020
Beginning balance at Dec. 31, 2023	$ 634,083		$ 27,709	$ 131,774		$ 1,425,257	$ (382,340)			$ 6,063	$ (574,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	15,135							15,135
Other Comprehensive Income (Loss), Net of Tax	(15,963)							(15,963)
Restricted stock and restricted stock unit activity		$ (4,112)			$ (37,504)				$ (4,112)			$ 33,392
Ending balance at Mar. 31, 2024	629,143		27,709	94,270		1,440,392	(398,303)				(540,988)
Beginning balance at Dec. 31, 2023	634,083		27,709	131,774		1,425,257	(382,340)			6,063	(574,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	50,132
Other Comprehensive Income (Loss), Net of Tax	(26,488)
Ending balance at Jun. 30, 2024	657,095		27,709	92,341		1,475,389	(408,828)				(535,579)
Beginning balance at Dec. 31, 2023	634,083		27,709	131,774		1,425,257	(382,340)			6,063	(574,380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury Stock, Value, Acquired, Cost Method	$ (20,000)
Treasury Stock, Shares, Acquired	800,000
Ending balance at Dec. 31, 2024	$ 720,322		27,709	98,621			(429,446)			6,063	(555,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent								623,080
Beginning balance at Mar. 31, 2024	629,143		27,709	94,270		1,440,392	(398,303)				(540,988)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	34,997					34,997
Other Comprehensive Income (Loss), Net of Tax	(10,525)						(10,525)
Restricted stock and restricted stock unit activity		$ 3,480		(4,248)	2,319				3,480		4,248	1,161
Ending balance at Jun. 30, 2024	657,095		27,709	92,341		1,475,389	(408,828)				(535,579)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent								651,032
Right-of-use operating lease assets	334,721
Financing Receivable, Allowance for Credit Loss	1,400
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent	714,259							714,259
Beginning balance at Dec. 31, 2024	720,322		27,709	98,621			(429,446)			6,063	(555,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	50,377							50,377
Other Comprehensive Income (Loss), Net of Tax	20,336							20,336
Restricted Stock or Unit Expense	(1,899)							(1,899)
Restricted stock and restricted stock unit activity	0			0	(24,307)			0			0	22,408
Treasury Stock, Value, Acquired, Cost Method	(10,008)							(10,008)			$ (10,008)
Treasury Stock, Shares, Acquired											479,154
Ending balance at Mar. 31, 2025	779,128		27,709	74,314		1,623,102	(409,110)				$ (542,950)
Beginning balance at Dec. 31, 2024	720,322		27,709	98,621			(429,446)			$ 6,063	(555,350)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	104,819
Other Comprehensive Income (Loss), Net of Tax	41,202
Treasury Stock, Value, Acquired, Cost Method	$ (20,000)
Treasury Stock, Shares, Acquired	1,000,000.0
Ending balance at Jun. 30, 2025	$ 848,124		27,709	73,605		1,677,544	(388,244)				(548,553)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent								773,065
Beginning balance at Mar. 31, 2025	779,128		27,709	74,314		1,623,102	(409,110)				(542,950)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	54,442					54,442
Other Comprehensive Income (Loss), Net of Tax	20,866						20,866
Restricted stock and restricted stock unit activity				(4,350)	$ 3,641				$ 3,794		153	$ 4,350
Treasury Stock, Value, Acquired, Cost Method	$ (10,000)							(10,106)			$ (10,106)
Treasury Stock, Shares, Acquired	500,000										471,759
Ending balance at Jun. 30, 2025	$ 848,124		$ 27,709	$ 73,605		$ 1,677,544	$ (388,244)				$ (548,553)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Right-of-use operating lease assets	283,745
Financing Receivable, Allowance for Credit Loss	900
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent	$ 842,061							$ 842,061