Segment Financial Data (Segment Operating Performance) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 19,305	$ 17,214
Operating profit	$ 1,870	$ 1,687
Operating Profit Margin	9.70%	9.80%
Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 19,788	$ 17,642
Operating profit	$ 2,257	$ 1,883
Operating Profit Margin	11.40%	10.70%
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	$ (483)	$ (428)
Operating profit	(5)	51
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Revenues	0	0
Operating profit	(96)	(43)
Collins Aerospace [Member] | Operating Segments
Segment Reporting Information [Line Items]
Revenues	6,673	6,120
Operating profit	$ 849	$ 897
Operating Profit Margin	12.70%	14.70%
Pratt & Whitney [Member] | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 6,456	$ 5,230
Operating profit	$ 412	$ 415
Operating Profit Margin	6.40%	7.90%
Raytheon | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 6,659	$ 6,292
Operating profit	$ 996	$ 571
Operating Profit Margin	15.00%	9.10%
FAS/CAS Operating Adjustment | Segment Reconciling Items
Segment Reporting Information [Line Items]
Revenues	$ 0	$ 0
Operating profit	214	289
Acquisition accounting adjustment member | Segment Reconciling Items
Segment Reporting Information [Line Items]
Revenues	0	0
Operating profit	$ (500)	$ (493)