Net Income Per Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Sep. 15, 2021	Sep. 17, 2018	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Sep. 14, 2021
Earnings Per Share [Abstract]
Dividends declared per share, in dollars per share			$ 0.79	$ 0.77	$ 1.58	$ 1.54
Tangible equity units issued		16,500,000
Tangible equity units proceeds		$ 800
Shares issued during period	5,460,031
Price for basic share (usd per share)						0.313400
Tangible Equity Units, Price for Shares Diluted						$ 0.341100
Difference between basic and diluted net income per share, in dollars per share			0.01	$ 0.01	0.01
Common stock, par value, in dollars per share			$ 0.125		$ 0.125		$ 0.125
Tangible Equity Units Final Settlement Rate								$ 0.330911