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Segment and Revenue Information - Schedule of Depreciation and Amortization Expense by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 491	$ 444	$ 1,417	$ 1,327
Operating Segments \| Commercial Airplanes
Segment Reporting Information [Line Items]
Depreciation and amortization	111	88	323	283
Depreciation and amortization expense, business segment allocation	80	59	252	225
Operating Segments \| Defense, Space & Security
Segment Reporting Information [Line Items]
Depreciation and amortization	56	57	159	153
Depreciation and amortization expense, business segment allocation	72	44	212	182
Operating Segments \| Global Services
Segment Reporting Information [Line Items]
Depreciation and amortization	79	75	225	227
Depreciation and amortization expense, business segment allocation	21	15	60	53
Unallocated items, eliminations and other
Segment Reporting Information [Line Items]
Depreciation and amortization	245	224	710	664
Intersegment revenues eliminated on consolidation
Segment Reporting Information [Line Items]
Depreciation and amortization expense, business segment allocation	$ 173	$ 118	$ 524	$ 460

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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