Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Fair Value of Employee Stock Options Granted as Determined by Black-Scholes Valuation Model Assumptions (Detail)

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STOCK-BASED COMPENSATION - Fair Value of Employee Stock Options Granted as Determined by Black-Scholes Valuation Model Assumptions (Detail) - $ / shares
9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Aug. 12, 2020
Jun. 01, 2020
May 13, 2020
Nonqualified Stock Options          
Stockholders Equity Note [Line Items]          
Risk-free interest rate 1.26% 2.60%      
Expected volatility 19.25% 17.79%      
Weighted-average fair value of options granted (usd per share) $ 11.74 $ 16.34      
Expected dividend yield 3.51% 2.94%      
Expected life (in years) 7 years 6 months 7 years 6 months      
Long-Term Incentive Performance Award          
Stockholders Equity Note [Line Items]          
Risk-free interest rate 0.15% 2.23%      
Expected volatility 27.53% 19.64%      
Weighted-average fair value of options granted (usd per share) $ 92.77 $ 123.44      
Expected dividend yield 101.00% 115.04%      
Closing New York Stock Exchange price     $ 186.67 $ 99.08  
Long-Term Incentive Performance Award | Restricted Units          
Stockholders Equity Note [Line Items]          
Closing New York Stock Exchange price         $ 91.65