Operations by Business Segment and Geographic Area - Financial Data By Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue	$ 2,784,156	$ 2,661,161	$ 2,424,706
Cost of services and products	2,215,714	2,175,667	2,025,735
Selling, general and administrative expense	263,890	239,224	217,643
Income from Operations	304,552	246,270	181,328
Depreciation, Depletion and Amortization	102,255	103,443	104,960
Depreciation	86,000	89,000	99,000
Interest income	14,483	12,124	15,425
Interest Expense, Operating and Nonoperating	(36,977)	(37,917)	(36,523)
Equity earnings of unconsolidated affiliates	1,046	929	2,061
Other Nonoperating Expense	2,796	3,510	(1,236)
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	285,900	224,916	161,055
Property, Plant and Equipment, Additions	111,015	134,285	100,726
Subsea Robotics
Segment Reporting Information [Line Items]
Revenue	855,216	829,822	752,521
Cost of services and products	541,377	541,702	530,556
Selling, general and administrative expense	56,732	52,909	47,672
Income from Operations	257,107	235,211	174,293
Depreciation, Depletion and Amortization	50,792	48,916	54,365
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	257,107	235,211	174,293
Property, Plant and Equipment, Additions	64,838
Manufactured Products
Segment Reporting Information [Line Items]
Revenue	568,971	555,500	493,692
Cost of services and products	457,813	473,218	424,079
Selling, general and administrative expense	38,698	39,282	34,062
Income from Operations	72,460	43,000	35,551
Depreciation, Depletion and Amortization	10,924	12,452	12,220
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	72,460	43,000	35,551
Property, Plant and Equipment, Additions	6,265
Offshore Projects Group
Segment Reporting Information [Line Items]
Revenue	616,045	591,037	546,366
Cost of services and products	480,392	482,467	449,426
Selling, general and administrative expense	39,595	34,871	32,394
Income from Operations	96,058	73,699	64,546
Depreciation, Depletion and Amortization	18,031	22,451	27,956
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	96,058	73,699	64,546
Property, Plant and Equipment, Additions	25,550
Integrity Management & Digital Solutions
Segment Reporting Information [Line Items]
Revenue	284,020	291,866	255,282
Cost of services and products	242,489	254,902	216,294
Selling, general and administrative expense	30,790	27,137	25,615
Income from Operations	10,741	9,827	13,373
Depreciation, Depletion and Amortization	7,286	6,025	3,608
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	10,741	9,827	13,373
Property, Plant and Equipment, Additions	3,715
Aerospace and Defense Technologies
Segment Reporting Information [Line Items]
Revenue	459,904	392,936	376,845
Cost of services and products	371,973	322,101	306,425
Selling, general and administrative expense	30,187	28,634	25,417
Income from Operations	57,744	42,201	45,003
Depreciation, Depletion and Amortization	3,719	2,620	2,504
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	57,744	42,201	45,003
Property, Plant and Equipment, Additions	4,543
Unallocated Expenses Member
Segment Reporting Information [Line Items]
Cost of services and products	121,670	101,277	98,955
Selling, general and administrative expense	67,888	56,391	52,483
Income from Operations	(189,558)	(157,668)	(151,438)
Depreciation, Depletion and Amortization	11,503	10,979	4,307
Interest income	14,483	12,124
Interest Expense, Operating and Nonoperating	(36,977)	(37,917)
Equity earnings of unconsolidated affiliates	1,046	929
Other Nonoperating Expense	2,796	3,510
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax	(208,210)	$ (179,022)	$ (171,711)
Other Operating Segment [Member]
Segment Reporting Information [Line Items]
Property, Plant and Equipment, Additions	$ 6,104

OCEANEERING INTERNATIONAL INC 10-K