Goodwill and Intangible Assets (Schedule of intangible assets) (Details) - USD ($) $ in Millions	Jan. 01, 2021	Jan. 03, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 1,946	$ 1,151
Finite-Lived Intangible Assets, Accumulated Amortization	(826)	(625)
Net carrying value	1,120	526
Indefinite-lived intangible assets	96	4
Total intangible assets, Gross carrying value	2,042	1,155
Total intangible assets, Net carrying value	1,216	530
In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	92
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	4	4
Programs
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,632	1,003
Finite-Lived Intangible Assets, Accumulated Amortization	(687)	(536)
Net carrying value	945	467
Software and technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	188	102
Finite-Lived Intangible Assets, Accumulated Amortization	(100)	(83)
Net carrying value	88	19
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	93	45
Finite-Lived Intangible Assets, Accumulated Amortization	(10)	(6)
Net carrying value	83	39
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	32	0
Finite-Lived Intangible Assets, Accumulated Amortization	(29)	0
Net carrying value	3	0
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1	1
Finite-Lived Intangible Assets, Accumulated Amortization	0	0
Net carrying value	$ 1	$ 1