Defined Benefit Plans (Components of Net Periodic Benefit Cost of Defined Benefit Pension Pans) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ (11)	$ (11)	$ (33)	$ (28)
Net periodic benefit (cost)	(2)	(7)	(2)	(14)
Defined benefit pension plans | U.S. pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	(11)	(17)	(34)	(51)
Expected return on plan assets	31	30	93	90
Amortization of actuarial loss	(12)	(10)	(34)	(28)
Amortization of prior service credit	(1)	0	(1)	(1)
Net periodic benefit (cost)	7	3	24	10
Defined benefit pension plans | Non-U.S. pension benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	(11)	(11)	(33)	(28)
Interest cost	(5)	(5)	(15)	(15)
Expected return on plan assets	10	9	32	27
Amortization of actuarial loss	(2)	(2)	(8)	(7)
Amortization of prior service credit	1	0	1	1
Curtailment and settlement gains (losses) recognized	(1)	0	(1)	0
Net periodic benefit (cost)	$ (8)	$ (9)	$ (24)	$ (22)