Segment Financial Data (Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting [Line Items]
Total assets	$ 173,972	$ 171,079
Operating segments
Segment Reporting [Line Items]
Total assets	170,965	168,957
Operating segments \| Collins Aerospace
Segment Reporting [Line Items]
Total assets	71,451	71,680
Operating segments \| Pratt & Whitney
Segment Reporting [Line Items]
Total assets	54,656	52,482
Operating segments \| Raytheon
Segment Reporting [Line Items]
Total assets	44,858	44,795
Corporate, eliminations, and other
Segment Reporting [Line Items]
Total assets	$ 3,007	$ 2,122

Amount of asset recognized for present right to economic benefit.

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+ Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details