Goodwill and Intangible Assets (Schedule of intangible assets) (Details) - USD ($) $ in Millions	Oct. 02, 2020	Jan. 03, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	$ 2,012	$ 1,151
Finite-lived intangible assets, accumulated amortization	(779)	(625)
Finite-lived intangible assets, net carrying value	1,233	526
Total intangible assets, gross carrying value	2,114	1,155
Total intangible assets, net carrying value	1,335	530
In-process research and development
Acquired Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	98
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 carrying value	1,638	1,003
Finite-lived intangible assets, accumulated amortization	(647)	(536)
Finite-lived intangible assets, net carrying value	991	467
Software and technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	205	102
Finite-lived intangible assets, accumulated amortization	(96)	(83)
Finite-lived intangible assets, net carrying value	109	19
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	136	45
Finite-lived intangible assets, accumulated amortization	(15)	(6)
Finite-lived intangible assets, net carrying value	121	39
Backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	32	0
Finite-lived intangible assets, accumulated amortization	(21)	0
Finite-lived intangible assets, net carrying value	11	0
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying value	1	1
Finite-lived intangible assets, accumulated amortization	0	0
Finite-lived intangible assets, net carrying value	$ 1	$ 1