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Schedule of Maturities of Lease Liabilities Under Operating and Finance Leases (Parenthetical) (Detail)
$ in Millions
6 Months Ended
Jun. 29, 2019
USD ($)
Leases [Line Items]  
Operating cash flows from operating leases $ 246
Operating Lease, term 10 years
Legally binding lease payments excluded from finance lease payments $ 8
Finance Lease, term 3 years
Options  
Leases [Line Items]  
Operating cash flows from operating leases $ 140
Legally Binding Lease Payments  
Leases [Line Items]  
Operating cash flows from operating leases $ 3