Selected Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Inventory [Line Items]
Inventory, net	$ 218,146	$ 222,849
Inventory, net:
Inventory, net	218,146	222,849
Other Assets, Noncurrent	165,625	144,282
Accrued liabilities:
Payroll and related costs	183,948	153,273
Accounts Payable, Other, Current	53,003	62,390
Income taxes payable	41,348	49,097
Current operating lease liability	127,427	131,415
Interest Payable, Current	5,000	12,667
Other	64,335	65,894
Total	475,061	474,736
Disclosure Text Block Supplement [Abstract]
Prepaid Expense, Current	95,413	81,668
Short-term Investments	7,000
Other Assets, Current	102,413	88,668
Subsea Robotics Member
Inventory [Line Items]
Inventory, Parts and Components, Net of Reserves	110,870	113,104
Disclosure Text Block Supplement [Abstract]
Inventory, Parts and Components, Net of Reserves	110,870	113,104
Manufactured Products Member
Inventory [Line Items]
Inventory, Parts and Components, Net of Reserves	89,305	92,149
Disclosure Text Block Supplement [Abstract]
Inventory, Parts and Components, Net of Reserves	89,305	92,149
Corporate Segment and Other Operating Segment
Inventory [Line Items]
Inventory, net	17,971	17,596
Inventory, net:
Inventory, net	$ 17,971	$ 17,596

Amount of obligations incurred classified as other, payable within one year or the normal operating cycle, if longer.

Name:	us-gaap_AccountsPayableOtherCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).