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Fair Value Measurements, Derivative Instruments, Gains & Losses (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Cross Currency Interest Rate Contract [Member] \| Other Expense, Net [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		$ (3)	$ (3)		$ (1)
Currency Exchange Contracts [Member] \| Other Expense, Net [Member] \| Derivatives Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net		(84)	(11)	(44)	6
Fair Value Hedging [Member] \| Interest Rate Swaps [Member] \| Other Expense, Net [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)	(53)	(43)	(81)
Gain (Loss) on Derivative, Net		7	54	43	83
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)
Payments for Hedge, Financing Activities				62
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Derivatives Designated as Hedging Instrument [Member] \| Subsequent Event [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Payments for Hedge, Financing Activities	$ 24
Cash Flow Hedging [Member] \| Interest Rate Swaps [Member] \| Other Expense, Net [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Cash Flow Hedge Reclassified from AOCI		(4)	(4)	(6)	(7)
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		(64)	(97)	19	59
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		(9)	(30)		7
Net Investment Hedging [Member] \| Cross Currency Interest Rate Contract [Member] \| Other Expense, Net [Member] \| Derivatives Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative, Net		$ 2	$ 14	$ 7	$ 28