Revenue from Contracts with Customers - Estimate at Completion Adjustments (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in Accounting Estimate [Line Items]
Net earnings	$ 278	$ 213	$ 168
Impact on diluted earnings per share (in dollars per share)	$ 1.03	$ 0.80	$ 0.64
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Revenue and operating earnings	$ (59)	$ (25)	$ (23)
Total % of revenue	2.00%	1.00%	1.00%
Net earnings	$ (47)	$ (20)	$ (18)
Impact on diluted earnings per share (in dollars per share)	$ (0.17)	$ (0.07)	$ (0.07)

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Leonardo DRS, Inc. 10-K