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Financial Instruments - Narrative (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Dec. 28, 2019
Investment Holdings [Line Items]          
Other comprehensive income before reclassifications $ 1,400,000 $ 0 $ 1,400,000 $ 0  
Equity Forwards          
Investment Holdings [Line Items]          
Equity forwards in place of common stock associated with its deferred compensation plans (in shares) 117,000   117,000    
Treasury locks          
Investment Holdings [Line Items]          
Treasury lock $ 300,000,000   $ 300,000,000    
Other comprehensive income before reclassifications 1,400,000        
Treasury locks outstanding 0   0   $ 0
Fair Value Hedging          
Investment Holdings [Line Items]          
Notional amount of interest rate swaps outstanding and designated as fair value hedges $ 100,000,000.0   $ 100,000,000.0   $ 100,000,000.0