Share-based Compensation - Summary of Restricted Stock Award Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of vested shares			$ 37
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards - Outstanding at beginning of period (in shares)	1,021
Awards - Granted (in shares)	827
Awards - Vested (in shares)	(580)
Awards - Forfeited (in shares)	(39)
Awards - Outstanding at end of period (in shares)	1,229	1,021
Weighted average fair value on date of grant - Outstanding at beginning of period (in dollars per share)	$ 113.47
Weighted average fair value on date of grant - Granted (in dollars per share)	142.77
Weighted average fair value on date of grant - Vested (in dollars per share)	104.66
Weighted average fair value on date of grant - Forfeited (in dollars per share)	131.88
Weighted average fair value on date of grant - Outstanding at end of period (in dollars per share)	$ 136.76	$ 113.47
Fair value of vested shares	$ 83	$ 104	$ 86