Summary of Major Components of Merger and Restructuring Expenses, Net (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Merger and transaction related expenses
Severance and retention			$ 1
Transaction and integration		$ 4	7
Facility closure, contract termination and other expenses, net		1
Total Merger and transaction related expenses		5	8
Restructuring expenses
Severance	$ (2)	41	26
Professional fees	1	21	41
Facility closure, contract termination, and other expenses, net	15	35	11
Total Restructuring expenses, net	14	97	78
Other operating expenses
Professional fees	37
Total Other operating expenses	37
Total Merger, restructuring and other operating expenses, net	$ 51	$ 102	$ 86