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Schedule of Quarterly Financial Data (Parenthetical) (Detail) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Mar. 30, 2019
Dec. 29, 2018
Sep. 29, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Quarterly Financial Data [Line Items]                      
Merger and restructuring expenses (income), net $ 11 $ 22 $ 69 $ 14 $ 27 $ 14 $ 14 $ 17 $ 116 $ 72 $ 94
Asset impairments $ 6 $ 5 $ 16 $ 29 7       $ 56 7 $ 4
Legal expense         25         25  
Loss on extinguishment and modification of debt         (15)         $ (15)  
Clearpath Holdings, LLC                      
Quarterly Financial Data [Line Items]                      
Tax Benefit         $ 4