Summary of Major Components of Merger and Restructuring Expenses (Income), Net (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Merger and transaction related expenses
Severance and retention									$ 11
Transaction and integration									35	$ 37	$ 37
Facility closure, contract termination and other expenses, net									10	5	27
Total Merger and transaction related expenses									56	42	64
Terminated Staples Acquisition (income) expenses
Retention											15
Transaction											43
Termination Fee											(250)
Total Terminated Staples Acquisition (income) expenses											(192)
Restructuring expenses
Severance										28	22
Facility closure, contract termination, professional fees and other expenses, net									16	24	26
Total Restructuring expenses									16	52	48
Total Merger and restructuring expenses (income), net	$ 27	$ 14	$ 14	$ 17	$ 32	$ 22	$ 20	$ 20	$ 72	$ 94	$ (80)