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Cash, Cash Equivalents and Current Marketable Securities - Cash and Cash Equivalent Composition (Details) - USD ($) $ in Millions | Jan. 02, 2022 | Jan. 03, 2021
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Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Fair value, available-for-sale | $ 19,727 | $ 14,042
Cash & Cash Equivalents | 14,487 | 13,985
Current Marketable Securities | 17,121 | 11,200
Held-to-maturity Securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 11,881 | 11,143
Fair value, held-to-maturity | 11,880 | 11,143
Cash & Cash Equivalents | 7,686 | 9,230
Current Marketable Securities | 4,195 | 1,913
Held-to-maturity, unrecognized loss | (1) |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | Cash |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 2,936 | 2,863
Fair value, held-to-maturity | 2,936 | 2,863
Cash & Cash Equivalents | 2,936 | 2,863
Current Marketable Securities | 0 | 0
Held-to-maturity, unrecognized loss | 0 |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | Non-U.S. Sovereign Securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 1,006 | 690
Fair value, held-to-maturity | 1,006 | 690
Cash & Cash Equivalents | 90 | 0
Current Marketable Securities | 916 | 690
Held-to-maturity, unrecognized loss | 0 |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | U.S. Reverse repurchase agreements |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 1,659 | 1,937
Fair value, held-to-maturity | 1,659 | 1,937
Cash & Cash Equivalents | 1,659 | 1,937
Current Marketable Securities | 0 | 0
Held-to-maturity, unrecognized loss | 0 |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | Corporate debt securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 3,479 | 2,674
Fair value, held-to-maturity | 3,478 | 2,674
Cash & Cash Equivalents | 200 | 1,451
Current Marketable Securities | 3,279 | 1,223
Held-to-maturity, unrecognized loss | (1) |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | Money market funds |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 1,901 | 2,102
Fair value, held-to-maturity | 1,901 | 2,102
Cash & Cash Equivalents | 1,901 | 2,102
Current Marketable Securities | 0 | 0
Held-to-maturity, unrecognized loss | 0 |
Held-to-maturity, unrecognized gain |  | 0
Held-to-maturity Securities | Time deposits |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, held-to-maturity | 900 | 877
Fair value, held-to-maturity | 900 | 877
Cash & Cash Equivalents | 900 | 877
Current Marketable Securities | 0 | 0
Held-to-maturity, unrecognized loss | 0 |
Held-to-maturity, unrecognized gain |  | 0
Available-for-sale Securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, available-for-sale | 19,731 | 14,041
Fair value, available-for-sale | 19,727 | 14,042
Cash & Cash Equivalents | 6,801 | 4,755
Current Marketable Securities | 12,926 | 9,287
Available-for-sale, unrecognized loss | (4) |
Available-for-sale, unrecognized gain |  | 1
Available-for-sale Securities | Corporate debt securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, available-for-sale | 245 | 250
Fair value, available-for-sale | 245 | 250
Cash & Cash Equivalents | 15 | 24
Current Marketable Securities | 230 | 226
Available-for-sale, unrecognized loss | 0 |
Available-for-sale, unrecognized gain |  | 0
Available-for-sale Securities | U.S. Gov't Securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, available-for-sale | 19,485 | 13,777
Fair value, available-for-sale | 19,481 | 13,778
Cash & Cash Equivalents | 6,785 | 4,731
Current Marketable Securities | 12,696 | 9,047
Available-for-sale, unrecognized loss | (4) |
Available-for-sale, unrecognized gain |  | 1
Available-for-sale Securities | Other Sovereign Securities |  |
Cash, Cash Equivalents, and Short-term Investments [Abstract] |  |
Carrying Amount, available-for-sale | 1 | 14
Fair value, available-for-sale | 1 | 14
Cash & Cash Equivalents | 1 | 0
Current Marketable Securities | 0 | 14
Available-for-sale, unrecognized loss | $ 0 |
Available-for-sale, unrecognized gain |  | $ 0

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