Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions		Jul. 02, 2023	Dec. 31, 2022
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	$ 3,892	$ 3,871
Accumulated Amortization		(2,160)	(2,047)
Net Carrying Amount		1,732	1,824
Contract and program intangible assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1],[2]	3,252	3,247
Accumulated Amortization	[2]	(1,783)	(1,688)
Net Carrying Amount		1,469	1,559
Trade names and trademarks
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	511	496
Accumulated Amortization		(263)	(248)
Net Carrying Amount		248	248
Technology and software
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	65	64
Accumulated Amortization		(50)	(48)
Net Carrying Amount		15	16
Other intangible assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	64	64
Accumulated Amortization		(64)	(63)
Net Carrying Amount		$ 0	$ 1

[1] Changes in gross carrying amounts consisted primarily of adjustments for foreign currency translation.

[2] Consisted of acquired backlog and probable follow-on work and associated customer relationships.