Partnership Capital - Roll Forward of Outstanding Partnership Loans (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2019	Mar. 30, 2018
Partners Capital Notes [Abstract]
Partnership loans outstanding at beginning of year	$ 332	$ 297
Partnership loans issued during the period	163	168
Repayment of Partnership loans during the period	(73)	(84)
Partnership loans outstanding at end of year	$ 422	$ 381