Quarterly report pursuant to Section 13 or 15(d)

Investments, Equity Investments (Details)

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Investments, Equity Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Dec. 26, 2020
Schedule of Investments [Line Items]      
Marketable Securities $ 1,523   $ 1,830
Cost Method Investments 3,864   3,304
Equity Method Investments 17   18
Equity Investments 5,404   $ 5,152
Mark to market on marketable equity securities1 (291) $ (103)  
Observable price adjustments on non-marketable 551 79  
Impairments (38) (143)  
Other Net Equity Investments 146 56  
Gain (Loss) on Investments 368 (111)  
Net gains (losses) recognized during the period on equity securities 311 (140)  
Less: Net (gains) losses recognized during the period on equity securities sold during the period (85) (7)  
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date 226 $ (147)  
Bejing Unisoc Technology Ltd.      
Schedule of Investments [Line Items]      
Gain (Loss) on Investments $ 471