Cash, Cash Equivalents and Current Marketable Securities - Cash and Cash Equivalent Composition (Details) - USD ($) $ in Millions	Jan. 03, 2021	Dec. 29, 2019
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Cash & Cash Equivalents	$ 13,985	$ 17,305
Debt Securities, Held-to-maturity, Fair Value	2,863
Current Marketable Securities	11,200	1,982
Held-to-maturity Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	11,143	14,919
Cash & Cash Equivalents	9,230	14,195
Debt Securities, Held-to-maturity, Fair Value	11,143
Current Marketable Securities	1,913	724
Held-to-maturity Securities | Cash
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,863	2,637
Cash & Cash Equivalents	2,863	2,637
Current Marketable Securities	0	0
Held-to-maturity Securities | Non-U.S. Sovereign Securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	690	439
Cash & Cash Equivalents	0	149
Debt Securities, Held-to-maturity, Fair Value	690
Current Marketable Securities	690	290
Held-to-maturity Securities | U.S. Reverse repurchase agreements
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	1,937	6,375
Cash & Cash Equivalents	1,937	6,375
Debt Securities, Held-to-maturity, Fair Value	1,937
Current Marketable Securities	0	0
Held-to-maturity Securities | Other Reverse repurchase agreements
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity		375
Cash & Cash Equivalents		375
Current Marketable Securities		0
Held-to-maturity Securities | Corporate debt securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,674	1,323
Cash & Cash Equivalents	1,451	889
Debt Securities, Held-to-maturity, Fair Value	2,674
Current Marketable Securities	1,223	434
Held-to-maturity Securities | Money market funds
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	2,102	2,864
Cash & Cash Equivalents	2,102	2,864
Debt Securities, Held-to-maturity, Fair Value	2,102
Current Marketable Securities	0	0
Held-to-maturity Securities | Time deposits(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, held-to-maturity	877	906
Cash & Cash Equivalents	877	906
Debt Securities, Held-to-maturity, Fair Value	877
Current Marketable Securities	0	0
Available-for-sale Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	14,041	4,368
Cash & Cash Equivalents	4,755	3,110
Debt Securities, Held-to-maturity, Fair Value	14,042
Current Marketable Securities	9,287	1,258
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	1
Available-for-sale Securities | U.S. Gov't Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	13,777	4,102
Cash & Cash Equivalents	4,731	3,095
Debt Securities, Held-to-maturity, Fair Value	13,778
Current Marketable Securities	9,047	1,007
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	1
Available-for-sale Securities | Corporate debt securities(1)
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	250	266
Cash & Cash Equivalents	24	15
Debt Securities, Held-to-maturity, Fair Value	250
Current Marketable Securities	226	$ 251
Available-for-sale Securities | Other Sovereign Securities
Cash, Cash Equivalents, and Short-term Investments [Abstract]
Carrying Amount, available-for-sale	14
Cash & Cash Equivalents	0
Debt Securities, Held-to-maturity, Fair Value	14
Current Marketable Securities	$ 14