Hedging Transactions And Derivative Financial Instruments (Summary of Notional Values and Pretax Impact in Fair Values of Net Investment Hedges) (Details) - USD ($) $ in Millions			3 Months Ended	9 Months Ended
Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivative and nonderivative, original notional amount	$ 12,589	$ 14,344	$ 12,589	$ 14,344	$ 12,589	$ 14,344
Derivative and nonderivative, notional amount	10,864	12,619	10,864	12,619	10,864	12,619
Derivative and nonderivative, gain (loss) recognized in OCI			173	(571)	725	(240)
Amounts reclassified from OCI			(74)	179	(162)	218
Net investment hedges \| Foreign currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	2,875	2,875	2,875	2,875	2,875	2,875
Derivative, notional amount outstanding	2,000	2,000	2,000	2,000	2,000	2,000
Derivative and nonderivative, gain (loss) recognized in OCI			34	(57)	100	10
Amounts reclassified from OCI			0	0	0	0
Net investment hedges \| Foreign currency denominated debt
Derivative Instruments, Gain (Loss) [Line Items]
Nonderivative, notional amount	4,864	6,619
Nonderivative, gain (loss) recognized in OCI			52	(209)	236	(242)
Amounts reclassified from OCI			0	0	0	0
Cash flow hedges \| Foreign currency contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	4,000	4,000	4,000	4,000	4,000	4,000
Derivative, notional amount outstanding	4,000	4,000	4,000	4,000	4,000	4,000
Derivative and nonderivative, gain (loss) recognized in OCI			87	(305)	389	(8)
Amounts reclassified from OCI			(90)	166	(207)	182
Cash flow hedges \| Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, original notional amount	850	850	850	850	850	850
Derivative, notional amount outstanding	$ 0	$ 0	0	0	0	0
Derivative and nonderivative, gain (loss) recognized in OCI			0	0	0	0
Amounts reclassified from OCI			1	1	2	2
Cash flow and net investment hedges
Derivative Instruments, Gain (Loss) [Line Items]
Amounts reclassified from OCI			$ (89)	$ 167	$ (205)	$ 184

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