Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions		Apr. 03, 2022	Dec. 31, 2021
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	$ 3,875	$ 3,874
Accumulated Amortization		(1,949)	(1,896)
Net Carrying Amount		1,926	1,978
Contract and program intangible assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1],[2]	3,242	3,239
Accumulated Amortization	[2]	(1,597)	(1,547)
Net Carrying Amount		1,645	1,692
Trade names and trademarks
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	499	501
Accumulated Amortization		(240)	(238)
Net Carrying Amount		259	263
Technology and software
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	70	70
Accumulated Amortization		(49)	(48)
Net Carrying Amount		21	22
Other intangible assets
Intangible Assets [Line Items]
Gross Carrying Amount	[1]	64	64
Accumulated Amortization		(63)	(63)
Net Carrying Amount		$ 1	$ 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.