Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Restricted Stock Units (RSUs) [Member]	Restricted Stock [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]	Oceaneering Shareholders' Equity [Member] Restricted Stock [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)	91,369
Other Comprehensive Income (Loss), Net of Tax	(13,818)
Ending balance at Sep. 30, 2024	704,041			27,709	95,325		1,516,626	(396,158)	697,978			6,063	(545,524)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	(13,818)
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)
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
Net income (loss)	41,237						41,237
Other Comprehensive Income (Loss), Net of Tax	$ 12,670							12,670
Restricted stock and restricted stock unit activity			$ 3,029			2,984					$ 3,029			45
Treasury Stock, Value, Acquired, Cost Method									(9,990)				(9,990)
Treasury Stock, Shares, Acquired	422,229
Ending balance at Sep. 30, 2024	$ 704,041			27,709	95,325		1,516,626	(396,158)	697,978			6,063	(545,524)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	12,670
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						(24,307)								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)	176,108
Other Comprehensive Income (Loss), Net of Tax	41,715
Treasury Stock, Value, Acquired, Cost Method	$ (30,000)
Treasury Stock, Shares, Acquired	1,400,000
Ending balance at Sep. 30, 2025	$ 913,731			27,709	77,251		1,748,833	(387,731)	907,668			6,063	(558,394)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	41,715
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									(10,106)				$ (10,106)
Treasury Stock, Shares, Acquired													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]
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent									842,061
Net income (loss)	71,289						71,289
Other Comprehensive Income (Loss), Net of Tax	513							513
Restricted stock and restricted stock unit activity		$ 3,909				$ 3,646				$ 3,909			263
Treasury Stock, Value, Acquired, Cost Method	$ (10,000)								(10,104)				$ (10,104)
Treasury Stock, Shares, Acquired	440,814												400,000
Ending balance at Sep. 30, 2025	$ 913,731			$ 27,709	$ 77,251		$ 1,748,833	$ (387,731)	$ 907,668			$ 6,063	$ (558,394)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	513
Right-of-use operating lease assets	378,537
Financing Receivable, Allowance for Credit Loss	700
Noncontrolling interest	6,063
Stockholders' Equity Attributable to Parent	$ 907,668