| Cash and Cash Equivalent Composition |
At the end of the fiscal year 2020 and 2019, cash, cash equivalents and current marketable securities were comprised of: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (Dollars in Millions) | | 2020 | | | Carrying Amount | | Unrecognized Gain | | | | Estimated Fair Value | | Cash & Cash Equivalents | | Current Marketable Securities | | Cash | | $ | 2,863 | | | — | | | | | 2,863 | | | 2,863 | | | — | | | | | | | | | | | | | | | Non-U.S. Sovereign Securities(1) | | 690 | | | — | | | | | 690 | | | — | | | 690 | | | U.S. Reverse repurchase agreements | | 1,937 | | | — | | | | | 1,937 | | | 1,937 | | | — | | | | | | | | | | | | | | | Corporate debt securities(1) | | 2,674 | | | — | | | | | 2,674 | | | 1,451 | | | 1,223 | | | Money market funds | | 2,102 | | | — | | | | | 2,102 | | | 2,102 | | | — | | Time deposits(1) | | 877 | | | — | | | | | 877 | | | 877 | | | — | | | Subtotal | | $ | 11,143 | | | — | | | | | 11,143 | | | 9,230 | | | 1,913 | | | | | | | | | | | | | | | | U.S. Gov't Securities | | $ | 13,777 | | | 1 | | | | | 13,778 | | | 4,731 | | | 9,047 | | | Other Sovereign Securities | | 14 | | | — | | | | | 14 | | | — | | | 14 | | | Corporate debt securities | | 250 | | | — | | | | | 250 | | | 24 | | | 226 | | | | | | | | | | | | | | | Subtotal available for sale(2) | | $ | 14,041 | | | 1 | | | | | 14,042 | | | 4,755 | | | 9,287 | | | | | | | | | | | | | | | | Total cash, cash equivalents and current marketable securities | | | | | | | | | | $ | 13,985 | | | 11,200 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | (Dollars in Millions) | | 2019 | | | Carrying Amount | | | | | | | | Cash & Cash Equivalents | | Current Marketable Securities | | Cash | | $ | 2,637 | | | | | | | | | 2,637 | | | — | | | | | | | | | | | | | | | Non-U.S. Sovereign Securities(1) | | 439 | | | | | | | | | 149 | | | 290 | | | U.S. Reverse repurchase agreements | | 6,375 | | | | | | | | | 6,375 | | | — | | | Other Reverse repurchase agreements | | 375 | | | | | | | | | 375 | | | — | | Corporate debt securities(1) | | 1,323 | | | | | | | | | 889 | | | 434 | | | Money market funds | | 2,864 | | | | | | | | | 2,864 | | | — | | Time deposits(1) | | 906 | | | | | | | | | 906 | | | — | | | Subtotal | | $ | 14,919 | | | | | | | | | 14,195 | | | 724 | | | | | | | | | | | | | | | | Gov't Securities | | $ | 4,102 | | | | | | | | | 3,095 | | | 1,007 | | | | | | | | | | | | | | | | Corporate debt securities | | 266 | | | | | | | | | 15 | | | 251 | | | | | | | | | | | | | | | Subtotal available for sale(2) | | $ | 4,368 | | | | | | | | | 3,110 | | | 1,258 | | | | | | | | | | | | | | | | Total cash, cash equivalents and current marketable securities | | | | | | | | | | $ | 17,305 | | | 1,982 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
(1) Held to maturity investments are reported at amortized cost and realized gains or losses are reported in earnings. (2) Available for sale debt securities are reported at fair value with unrealized gains and losses reported net of taxes in other comprehensive income.
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| Contractual Maturities of Available for Sale Securities |
The contractual maturities of the available for sale debt securities at January 3, 2021 are as follows: | | | | | | | | | | | | | | | | (Dollars in Millions) | | Cost Basis | | Fair Value | | Due within one year | | $ | 14,026 | | | 14,027 | | | Due after one year through five years | | 15 | | | 15 | | | Due after five years through ten years | | — | | | — | | | Total debt securities | | $ | 14,041 | | | 14,042 | |
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