Other Comprehensive Income (Loss), Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019	Dec. 28, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ 48
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (1,152)		(1,152)		$ (1,280)
Other comprehensive income (loss)	389	$ 191	128	$ 352
Unrealized holding gains (losses) on available-for-sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	105		105		54
Other comprehensive income (loss) before reclassifications			19
Amounts reclassified out of accumulated other comprehensive income (loss)			60
Tax effects			(28)
Other comprehensive income (loss)			51
Unrealized holding gains (losses) on derivatives [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	(1,359)		(1,359)		(1,382)
Other comprehensive income (loss) before reclassifications			(2)
Amounts reclassified out of accumulated other comprehensive income (loss)			28
Tax effects			(3)
Other comprehensive income (loss)			23
Actuarial gains (losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	102		102		48
Other comprehensive income (loss) before reclassifications			69
Amounts reclassified out of accumulated other comprehensive income (loss)			0
Tax effects			(15)
Other comprehensive income (loss)			54
Foreign currency translation adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss)	$ (1,152)		(1,152)		$ (1,280)
Other comprehensive income (loss) before reclassifications			86
Amounts reclassified out of accumulated other comprehensive income (loss)			88
Tax effects			(46)
Other comprehensive income (loss)			$ 128