Partnership Capital - Roll Forward of Outstanding Partnership Loans (Detail) - USD ($) $ in Millions	6 Months Ended
	Jun. 28, 2019	Jun. 29, 2018
Partners Capital Notes [Abstract]
Partnership loans outstanding at beginning of year	$ 332	$ 297
Partnership loans issued during the period	164	168
Repayment of Partnership loans during the period	(97)	(112)
Partnership loans outstanding at end of period	$ 399	$ 353