Other Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Other Liabilities Disclosure [Abstract]
Salaries, wages and accrued bonuses	$ 85	$ 75
Fringe benefits	60	63
Provision for contract losses	35	43
Operating lease liabilities	28	27
Taxes payable	10	24
Warranty reserves	24	19
Other	$ 27	$ 15
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total other current liabilities	Total other current liabilities
Total other current liabilities	$ 269	$ 266
Operating lease liabilities	95	66
Unrecognized tax benefits	50	46
Warranty reserves	9	10
Other	$ 12	$ 8
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Total other noncurrent liabilities	Total other noncurrent liabilities
Total other noncurrent liabilities	$ 166	$ 130

Salaries, Wages And Accrued Bonuses, Current

No definition available.

Name:	drs_SalariesWagesAndAccruedBonusesCurrent
Namespace Prefix:	drs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).