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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
Mar. 31, 2018
Jun. 29, 2019
Jun. 30, 2018
Jul. 01, 2017
Jun. 29, 2019
Jun. 30, 2018
Dec. 29, 2018
Stockholders Equity Note [Line Items]              
equity units issued       7,500,000      
Option Indexed to Issuer's Equity, Strike Price   $ 161.66   $ 162.27 $ 161.66    
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 $ 6.1859    
Document Period End Date         Jun. 29, 2019    
Long-term Debt         $ 750.0    
Common Stock, Par or Stated Value Per Share   $ 2.5     $ 2.5   $ 2.50
Common Stock, Shares, Issued   176,902,738     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 $ 156.72    
Maximum [Member]              
Stockholders Equity Note [Line Items]              
Option Indexed to Issuer's Equity, Strike Price $ 203.92     $ 179.53 $ 203.74    
Stock Options [Member]              
Stockholders Equity Note [Line Items]              
Antidilutive securities excluded from the computation of EPS   2,274,000 1,161,000   2,300,000 1,162,000