Equity-Based Compensation (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 31, 2023
Equity-Based Compensation
Shares available under employee stock plans	13,500,000
Maximum number of shares authorized for issuance				15,200,000
Compensation expense recognized	$ 99	$ 78	$ 71
Compensation expense recognized, tax benefit	18	$ 15	$ 14
Currently unrecognized compensation expense	$ 49
Weighted average period unrecognized compensation expenses expected to be recognized	1 year 8 months 12 days
Employee Stock Purchase Plan [Member]
Equity-Based Compensation
Service period	30 days
Price employees purchase shares (as a percent)	85.00%
Annual salary deducted for plan (as a percent)	10.00%
Shares issued under the plan	408,000	473,000	455,000
Shares available under employee stock plans	1,400,000
Compensation expense recognized	$ 11	$ 14	$ 13
Compensation expense recognized, net of tax	$ 8	$ 11	$ 10