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Employee Stock Plans - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Employee Benefits Disclosure [Line Items]
Shares reserved and available for issuance (in shares)	22.0
Non-cash stock-based compensation expense	$ 24	$ 30	$ 26
Granted (in shares)	2.0	1.8	1.8
Vested (in shares)	1.5	2.3	1.5
RSU Awards | Executive Officer
Employee Benefits Disclosure [Line Items]
Compensation expense	$ 21	$ 27	$ 23
RSU Awards | Vesting over one-year period
Employee Benefits Disclosure [Line Items]
Vesting term	1 year
RSU Awards | Vesting over two-year period
Employee Benefits Disclosure [Line Items]
Vesting term	2 years
RSU Awards | Vesting over three-year period
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
RSU Awards | Time-Based Awards
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
Percentage of total shares awarded	25.00%
Percentage of shares expected to be released	100.00%
RSU Awards | TSR Awards
Employee Benefits Disclosure [Line Items]
Percentage of total shares awarded	37.50%
RSU Awards | TSR Awards, Performance Period Three
Employee Benefits Disclosure [Line Items]
Performance period	3 years
RSU Awards | Performance-Based Awards
Employee Benefits Disclosure [Line Items]
Percentage of total shares awarded	37.50%
Other Stock Plans, upper-middle management awards
Employee Benefits Disclosure [Line Items]
Vesting term	3 years
Other Stock Plans, employee stock purchase plan
Employee Benefits Disclosure [Line Items]
Employee stock purchase plan discount percentage	10.00%
Other Stock Plans
Employee Benefits Disclosure [Line Items]
Granted (in shares)	0.3	0.2	0.2
Compensation expense	$ 3	$ 3	$ 3
Senior Executive Plan | RSU Awards
Employee Benefits Disclosure [Line Items]
Granted (in shares)	1.7
Unrecognized compensation cost related to unvested RSU awards	$ 19
Senior Executive Plan | RSU Awards | Vesting over one-year period
Employee Benefits Disclosure [Line Items]
Vesting term	1 year
Senior Executive Plan | RSU Awards | Vesting over two-year period
Employee Benefits Disclosure [Line Items]
Vesting term	2 years
Senior Executive Plan | RSU Awards | Vesting over three-year period
Employee Benefits Disclosure [Line Items]
Vesting term	3 years

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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