Stock-based Compensation Plans - Summary of Stock Option Activity (Detail) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-Based Payment Arrangement [Abstract]
Outstanding at beginning of year, Shares	35	42	48
Exercised, Shares	(2)	(2)	0
Forfeited/Expired, Shares	(5)	(5)	(6)
Outstanding at year-end, Shares	28	35	42
Outstanding at beginning of year, Weighted-Average Exercise Price	$ 70.31	$ 68.95	$ 70.37
Exercised, Weighted-Average Exercise Price	40.02	40.04	0
Forfeited/Expired, Weighted Average Exercise Price	73.18	71.45	80.46
Outstanding at year-end, Weighted-Average Exercise Price	$ 72.33	$ 70.31	$ 68.95