Other Comprehensive Income (Loss), Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2021	Mar. 28, 2020	Dec. 26, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 127
Accumulated Other Comprehensive Income (Loss), Net of Tax	(1,103)		$ (751)
Other comprehensive income (loss)	(352)	$ (261)
Unrealized holding gains (losses) on available-for-sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	381		731
Other comprehensive income (loss) before reclassifications	(334)
Amounts reclassified out of accumulated other comprehensive income (loss)	(95)
Tax effects	79
Other comprehensive income (loss)	(350)
Unrealized holding gains (losses) on derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(1,552)		(1,565)
Other comprehensive income (loss) before reclassifications	5
Amounts reclassified out of accumulated other comprehensive income (loss)	16
Tax effects	(8)
Other comprehensive income (loss)	13
Actuarial gains (losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	68		83
Other comprehensive income (loss) before reclassifications	(19)
Amounts reclassified out of accumulated other comprehensive income (loss)	0
Tax effects	4
Other comprehensive income (loss)	(15)
Foreign currency translation adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(1,103)		$ (751)
Other comprehensive income (loss) before reclassifications	(348)
Amounts reclassified out of accumulated other comprehensive income (loss)	(79)
Tax effects	75
Other comprehensive income (loss)	$ (352)