Partnership Capital - Roll Forward of Outstanding Partnership Loans (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 27, 2019	Sep. 28, 2018
Partners Capital Notes [Abstract]
Partnership loans outstanding at beginning of year	$ 332	$ 297
Partnership loans issued during the period	164	170
Repayment of Partnership loans during the period	(123)	(118)
Partnership loans outstanding at end of period	$ 373	$ 349