Investments (Tables)
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3 Months Ended |
Mar. 27, 2020 |
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| Investments [Abstracts] |
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| Unrealized Gain (Loss) on Investments |
The calculation of net unrealized gains and losses recognized during the period related to equity securities still held at the end of the period is as follows (in millions): | | | | | | | |
| Three Months Ended | | March 27, 2020 |
| March 29, 2019 |
| Net gains (losses) recognized during the period related to equity securities | $ | (396 | ) | $ | 147 |
| Less: Net gains (losses) recognized during the period related to equity securities sold
during the period | (16 | ) | 7 |
| Net unrealized gains (losses) recognized during the period related to equity securities still held at the end of the period | $ | (380 | ) | $ | 140 |
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| Carrying value of equity securities by balance sheet location [Table Text Block] |
The carrying values of our equity securities were included in the following line items in our condensed consolidated balance sheets (in millions): | | | | | | | | | Fair Value with Changes Recognized in Income |
| Measurement Alternative — No Readily Determinable Fair Value |
| March 27, 2020 | | | Marketable securities | $ | 275 |
| $ | — |
| Other investments | 599 |
| 53 |
| Other assets | 889 |
| — |
| Total equity securities | $ | 1,763 |
| $ | 53 |
| December 31, 2019 |
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| Marketable securities | $ | 329 |
| $ | — |
| Other investments | 772 |
| 82 |
| Other assets | 1,118 |
| — |
| Total equity securities | $ | 2,219 |
| $ | 82 |
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| Schedule of debt securities [Table Text Block] |
Our debt securities consisted of the following (in millions): | | | | | | | | | | | | | | | | Gross Unrealized | Estimated Fair Value |
| | Cost |
| Gains |
| Losses |
| March 27, 2020 | | | | | Trading securities | $ | 33 |
| $ | — |
| $ | (2 | ) | $ | 31 |
| Available-for-sale securities | 2,365 |
| 98 |
| (4 | ) | 2,459 |
| Total debt securities | $ | 2,398 |
| $ | 98 |
| $ | (6 | ) | $ | 2,490 |
| December 31, 2019 | | | | | Trading securities | $ | 46 |
| $ | 1 |
| $ | — |
| $ | 47 |
| Available-for-sale securities | 3,172 |
| 113 |
| (4 | ) | 3,281 |
| Total debt securities | $ | 3,218 |
| $ | 114 |
| $ | (4 | ) | $ | 3,328 |
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| Fair value of debt securities by balance sheet location [Table Text Block] |
The carrying values of our debt securities were included in the following line items in our condensed consolidated balance sheets (in millions): | | | | | | | | | | | | | | | | March 27, 2020 | | December 31, 2019 | | Trading Securities |
| Available-for-Sale Securities |
| | Trading Securities |
| Available-for-Sale Securities |
| Cash and cash equivalents | $ | — |
| $ | 97 |
| | $ | — |
| $ | 123 |
| Marketable securities | 31 |
| 2,086 |
| | 47 |
| 2,852 |
| Other assets | — |
| 276 |
| | — |
| 306 |
| Total debt securities | $ | 31 |
| $ | 2,459 |
| | $ | 47 |
| $ | 3,281 |
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| Realized Gain (Loss) on Investments [Table Text Block] |
The sale and/or maturity of available-for-sale debt securities resulted in the following realized activity (in millions): | | | | | | | | | Three Months Ended | | March 27, 2020 |
| March 29, 2019 |
| Gross gains | $ | 8 |
| $ | 5 |
| Gross losses | (2 | ) | (3 | ) | Proceeds | 906 |
| 722 |
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| Contractual maturity amounts of the investment securities |
The contractual maturities of these available-for-sale debt securities as of March 27, 2020 were as follows (in millions): | | | | | | | | | Cost |
| Estimated
Fair Value |
| Within 1 year | $ | 1,374 |
| $ | 1,393 |
| After 1 year through 5 years | 761 |
| 805 |
| After 5 years through 10 years | 58 |
| 68 |
| After 10 years | 172 |
| 193 |
| Total | $ | 2,365 |
| $ | 2,459 |
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