Share-based Compensation - Summary of Restricted Stock Award Activity (Detail) - Restricted Stock - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards - Outstanding at beginning of period (in shares)	1,312
Awards - Granted (in shares)	470
Awards - Vested (in shares)	(735)
Awards - Forfeited (in shares)	(26)
Awards - Outstanding at end of period (in shares)	1,021	1,312
Weighted average fair value on date of grant - Outstanding at beginning of period (in dollars per share)	$ 80.61
Weighted average fair value on date of grant - Granted (in dollars per share)	141.76
Weighted average fair value on date of grant - Vested (in dollars per share)	73.24
Weighted average fair value on date of grant - Forfeited (in dollars per share)	104.14
Weighted average fair value on date of grant - Outstanding at end of period (in dollars per share)	$ 113.47	$ 80.61
Fair value of vested shares	$ 104	$ 86	$ 72