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Investment Income (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 24, 2022
Sep. 30, 2023
Sep. 24, 2022
Investment Income, Net [Abstract]        
Interest and dividend income $ 101 $ 61 $ 273 $ 173
Net realized (loss) gain on investments 0 (3) 134 (2)
Investment income before fair value adjustment 101 58 407 171
Fair value adjustment, due to net unrealized (loss) gain, on equity securities held at end of period (144) (556) 225 (1,495)
Net gain on sale of equity securities previously recognized through fair value adjustment 0 0 (48) 0
Investment (loss) $ (43) $ (498)   $ (1,324)
Investment income     $ 584