Employee benefits disclosure.

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- Definition

Employee stock purchase plan discount percentage.

+ References

No definition available.

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- Definition

Share based Compensation Arrangement By Share based Payment Award Award forfeited percent additional

+ References

No definition available.

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- Definition

ShareBased compensation arrangement by share based payment award award performance period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award shares expected to released percentage.

+ References

No definition available.

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- Definition

Percentage of the total share based awards awarded that are of this award type.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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-Publisher FASB
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-Section S99
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-Publisher FASB
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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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-Publisher FASB
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 10
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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Employee Stock Plans - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Employee Benefits Disclosure [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance	7.0
Compensation expense	$ 18	$ 17	$ 15
Granted	3.0	2.2	1.4
Vested	1.1	1.2	0.9
RSU Awards \| Executive Officer
Employee Benefits Disclosure [Line Items]
Compensation expense	$ 16	$ 15	$ 13
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]
Vesting term	3 years
Percentage of total shares awarded	20.00%
RSU Awards \| Performance-Based Awards
Employee Benefits Disclosure [Line Items]
Percentage of total shares awarded	55.00%
RSU Awards \| TSR Awards, Performance Period Three
Employee Benefits Disclosure [Line Items]
Performance period	3 years
Percentage of Additional shares awarded	20.00%
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]
Compensation expense	$ 2	$ 2	$ 2
Granted	0.3	0.2	0.1
Senior Executive Plan \| RSU Awards
Employee Benefits Disclosure [Line Items]
Granted	2.7
Unvested RSUs	3.2
Unrecognized compensation cost related to unvested RSU awards	$ 14
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