The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Operations by Business Segment and Geographic Area Operations by Business Segment and Geographic Area - Other Significant Reconciling Items (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Depreciation	$ 89,000	$ 99,000	$ 113,000
Operating Lease, Right-of-Use Asset	334,721	337,554
Amortization of Intangible Assets	$ 14,000	6,400	7,500
Corporate and Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		2,880	10,795
Subsea Robotics
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		67,197	55,649
Manufactured Products
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		6,776	4,129
Offshore Projects Group
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		8,574	4,456
Integrity Management & Digital Solutions
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		10,346	4,058
Aerospace and Defense Technologies
Segment Reporting, Asset Reconciling Item [Line Items]
Property, Plant and Equipment, Additions		$ 4,953	$ 1,956