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Dividends Declared Per Share (Detail) - $ / shares
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dividends Payable [Line Items]    
Dividend Amount $ 0.39 $ 0.38
Group One    
Dividends Payable [Line Items]    
Declaration Date Apr. 27, 2022  
Date Paid (Payable) May 27, 2022  
Shareholder of Record Date May 13, 2022  
Dividend Amount $ 0.39  
Group Two    
Dividends Payable [Line Items]    
Declaration Date Jan. 26, 2022  
Date Paid (Payable) Feb. 25, 2022  
Shareholder of Record Date Feb. 11, 2022  
Dividend Amount $ 0.39  
Group Three    
Dividends Payable [Line Items]    
Declaration Date Oct. 27, 2021  
Date Paid (Payable) Nov. 29, 2021  
Shareholder of Record Date Nov. 15, 2021  
Dividend Amount $ 0.38  
Group Four    
Dividends Payable [Line Items]    
Declaration Date Jul. 28, 2021  
Date Paid (Payable) Aug. 27, 2021  
Shareholder of Record Date Aug. 13, 2021  
Dividend Amount $ 0.38  
Group Five    
Dividends Payable [Line Items]    
Declaration Date Apr. 28, 2021  
Date Paid (Payable) May 28, 2021  
Shareholder of Record Date May 14, 2021  
Dividend Amount $ 0.38  
Group Six    
Dividends Payable [Line Items]    
Declaration Date Jan. 27, 2021  
Date Paid (Payable) Feb. 26, 2021  
Shareholder of Record Date Feb. 12, 2021  
Dividend Amount $ 0.38