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Fair Value Measurements, Derivative Instruments, Gains & Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Cross Currency Interest Rate Contract [Member] \| Other Income (Expense) [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net				$ (10)
Currency Exchange Contracts [Member] \| Cost of Product Revenues [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	$ (11)	$ (3)	$ 1
Currency Exchange Contracts [Member] \| Other Income (Expense) [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	(28)	(84)	155	(44)
Fair Value Hedging [Member] \| Interest Rate Swaps [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Change in Unrealized Gain (Loss) on Hedged long-term obligations in Fair Value Hedge		(7)	25	(43)
Gain (Loss) on Derivative, Net		7	(3)	43
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in OCI on Cash Flow Hedge		(4)		(85)
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Cash Flow Hedge Reclassified from AOCI	(2)	(4)	(19)	(6)
Net Investment Hedging [Member] \| Foreign currency-denominated debt [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in Currency Translation Adjustment on Net Investment Hedge	(90)	(64)	376	19
Net Investment Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) in Currency Translation Adjustment on Net Investment Hedge	(6)	(9)	32
Net Investment Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Other Income (Expense) [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net	$ 2	$ 2	$ 4	$ 7