Represents the vesting percentage achieved.

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The performance period used to calculate the final payments for performance shares.

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Number of tranches in share-based compensation award.

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Percentage of share-based compensation award.

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No definition available.

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Minimum period the individual is required to perform services to be fully vested under the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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

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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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Percentage of vesting of award under share-based payment arrangement.

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Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.

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Equity - Performance shares (Details) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($) item $ / shares shares	Dec. 31, 2021 USD ($) item	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Share-based compensation
Share-based payments subject to redemption \| $	$ 31	$ 36	$ 21	$ 30
Performance Shares
Share-based compensation
Number of tranches \| item	2	2
Granted (in shares) \| shares	86,000
Weighted-average fair value per share, Granted (in dollars per share) \| $ / shares	$ 138.85
Cancelled (in shares) \| shares	0
Unrecognized compensation cost \| $	$ 16
Remaining requisite service period (in years)	2 years 4 months 24 days
Performance shares, vesting based on TSR
Share-based compensation
Percentage of share-based compensation award	50.00%	50.00%
Performance shares, vesting based on Adjusted ROIC
Share-based compensation
Percentage of share-based compensation award	50.00%	50.00%
Performance period (in years)	3 years	3 years
2019 Awards \| Performance Shares
Share-based compensation
Performance period (in years)	3 years
Award pay out achieved (as a percent)	0.00%
2022 Awards \| Performance shares, vesting based on TSR
Share-based compensation
Vesting period	3 years
Performance period (in years)	3 years
2022 Awards \| Performance shares, vesting based on TSR \| Minimum
Share-based compensation
Performance shares available for vesting (as a percent)	0.00%
2022 Awards \| Performance shares, vesting based on TSR \| Maximum
Share-based compensation
Performance shares available for vesting (as a percent)	200.00%
2022 Awards \| Performance shares, vesting based on Adjusted ROIC
Share-based compensation
Vesting period	3 years
Performance period (in years)	3 years
2022 Awards \| Performance shares, vesting based on Adjusted ROIC \| Minimum
Share-based compensation
Performance shares available for vesting (as a percent)	0.00%
2022 Awards \| Performance shares, vesting based on Adjusted ROIC \| Maximum
Share-based compensation
Performance shares available for vesting (as a percent)	200.00%