Partnership Capital Subject to Mandatory Redemption - Roll Forward of Outstanding Partnership Loans (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 24, 2021	Sep. 25, 2020
Partners Capital Notes [Abstract]
Partnership loans outstanding at beginning of year	$ 341	$ 360
Partnership loans issued during the period	222	163
Repayment of Partnership loans during the period	227	160
Partnership loans outstanding at end of period	$ 336	$ 363