Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	1 Months Ended	9 Months Ended
	Apr. 30, 2023	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock options, granted (in shares)		0.1
Employee stock options, weighted average grant date fair value (in usd per share)		$ 95.66
2001 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of additional shares authorized (in shares)	4.0
Number of shares authorized (in shares)		54.6
Instruments Other Than Options | 2001 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		10.7
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, shares granted (in shares)		0.6
Other than options, weighted average grant date fair value (in usd per share)		$ 296.05
Award vesting period		4 years
Unrecognized compensation expense		$ 261
Weighted average period to recognize expense		2 years 6 months
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Unrecognized compensation expense		$ 12
Weighted average period to recognize expense		1 year 10 months 24 days
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Other than options, shares granted (in shares)		0.1
Other than options, weighted average grant date fair value (in usd per share)		$ 287.70
Award vesting period		3 years
Unrecognized compensation expense		$ 29
Weighted average period to recognize expense		2 years 1 month 6 days