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Earnings Per Share - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Mar. 31, 2018
Sep. 28, 2019
Sep. 29, 2018
Jul. 01, 2017
Jun. 29, 2019
Sep. 28, 2019
Sep. 29, 2018
Dec. 29, 2018
Stockholders Equity Note [Line Items]                
equity units issued       7,500,000        
Option Indexed to Issuer's Equity, Strike Price   $ 161.52   $ 162.27   $ 161.52    
Equity Unit       $ 750.0        
Preferred Stock, Shares Issued       750,000        
Preferred Stock, Liquidation Preference, Value       $ 750.0        
Preferred Stock Conversion Rate Number Of Common Stock Shares       $ 6.1627   $ 6.1911    
Document Period End Date           Sep. 28, 2019    
Long-term Debt           $ 750.0    
Common Stock, Par or Stated Value Per Share         $ 2.5     $ 2.50
Common Stock, Shares, Issued         176,902,738     176,902,738
Minimum [Member]                
Stockholders Equity Note [Line Items]                
Option Indexed to Issuer's Equity, Strike Price $ 156.86     162.27 $ 156.65      
Maximum [Member]                
Stockholders Equity Note [Line Items]                
Option Indexed to Issuer's Equity, Strike Price $ 203.92     $ 179.53 $ 203.65      
Stock Options [Member]                
Stockholders Equity Note [Line Items]                
Antidilutive securities excluded from the computation of EPS   2,217,000 1,139,000     2,273,000 1,155,000