Business Combinations (Goodwill) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Nov. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 53,840	$ 54,436
Goodwill, Acquired During Period	$ 800	31
Goodwill, Translation and Purchase Accounting Adjustments		(627)
Collins Aerospace Systems [Member]
Business Acquisition [Line Items]
Goodwill		30,719	31,384
Goodwill, Acquired During Period		(36)
Goodwill, Translation and Purchase Accounting Adjustments		(629)
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount		$ 9,500
Collins Aerospace Systems [Member] | Collins Reporting Unit 1 [Member]
Business Acquisition [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		15.00%
Collins Aerospace Systems [Member] | Collins Reporting Unit 2 [Member]
Business Acquisition [Line Items]
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		17.00%
Pratt and Whitney [Member]
Business Acquisition [Line Items]
Goodwill		$ 1,563	1,563
Goodwill, Acquired During Period		0
Goodwill, Translation and Purchase Accounting Adjustments		0
Raytheon Intelligence & Space
Business Acquisition [Line Items]
Goodwill		9,841	9,813
Goodwill, Acquired During Period		26
Goodwill, Translation and Purchase Accounting Adjustments		2
Raytheon Missiles & Defense
Business Acquisition [Line Items]
Goodwill		11,700	11,659
Goodwill, Acquired During Period		41
Goodwill, Translation and Purchase Accounting Adjustments		0
Total Segments [Member]
Business Acquisition [Line Items]
Goodwill		53,823	54,419
Goodwill, Acquired During Period		31
Goodwill, Translation and Purchase Accounting Adjustments		(627)
Eliminations and other [Member]
Business Acquisition [Line Items]
Goodwill		17	$ 17
Goodwill, Acquired During Period		0
Goodwill, Translation and Purchase Accounting Adjustments		$ 0