Acquisitions and Divestitures - Schedule of Intangible Assets Acquired (Details) - USD ($) $ in Millions					12 Months Ended
	May 07, 2021	Jan. 14, 2021	May 04, 2020	Jan. 31, 2020	Dec. 30, 2022
1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		8 years
Finite-lived intangible assets		$ 86
SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			11 years
Fair value			$ 355
Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period				12 years
Finite-lived intangible assets				$ 528
Fair value				$ 528
Cobham Aviation Services
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period					7 years
Finite-lived intangible assets					$ 25
In-process research and development ("IPR&D") | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets			$ 92
Programs
Acquired Indefinite-lived Intangible Assets [Line Items]
Finite-lived intangible assets					$ 21
Programs | Gibbs And Cox
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period	12 years
Finite-lived intangible assets	$ 89
Programs | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		10 years
Finite-lived intangible assets		$ 37
Programs | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			13 years
Finite-lived intangible assets			$ 141
Programs | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period				13 years
Finite-lived intangible assets				$ 485
Programs | Cobham Aviation Services
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period					7 years
Customer relationships | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			10 years
Finite-lived intangible assets			$ 49
Technology | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		8 years
Finite-lived intangible assets		$ 43
Technology | SD&A Businesses
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period			10 years
Finite-lived intangible assets			$ 73
Technology | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period				11 years
Finite-lived intangible assets				$ 11
Technology | Cobham Aviation Services
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period					9 years
Finite-lived intangible assets					$ 4
Backlog | 1901 Group
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period		1 year
Finite-lived intangible assets		$ 6
Backlog | Dynetics
Acquired Indefinite-lived Intangible Assets [Line Items]
Weighted average amortization period				1 year
Finite-lived intangible assets				$ 32