Weighted Average Common Shares - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Earnings Per Share [Abstract]
Shares granted, restricted stock (in shares)		586,287	779,167
Shares granted, performance share units (in shares)		178,008	205,155
Shares granted, stock options (in shares)		269,748	319,295
Authorized common stock repurchase amount				$ 7,500
Remaining authorized common stock repurchase amount				$ 650
Number of common stock acquired and retired		3,100,000
Common stock acquired and retired	$ 150	$ 340	$ 0