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Cash Dividends - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
May 29, 2019
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2018
Mar. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Dividends [Abstract]              
Dividends payable, amount per share $ 0.05            
Dividends payable, declared date May 29, 2019            
Dividends payable, paid date Jun. 28, 2019            
Dividends payable, record date Jun. 14, 2019            
Cash dividends paid   $ 19 $ 19 $ 19 $ 19 $ 38 $ 38