Share-Based Compensation Share-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Options exercised policy	10 years
Number of shares originally available for grant	7,700,000
Shares available for grant	4,500,000
Closing stock price per share	$ 66.85
Total intrinsic value of stock options exercised	$ 17	$ 29	$ 6
Shares in treasury	97,197,962	97,476,872
Restricted Stock
Total fair value of restricted stock awards that fully vested	$ 4	$ 8	17
Restricted Stock Units (RSUs)
Total fair value of restricted stock awards that fully vested	$ 19	$ 21	$ 12
Minimum \| Restricted Stock Units (RSUs)
Share-based compensation vesting period	3 years
Minimum \| Stock Options
Share-based compensation vesting period	1 year
Maximum \| Restricted Stock Units (RSUs)
Share-based compensation vesting period	5 years
Maximum \| Stock Options
Share-based compensation vesting period	4 years

Options exercised policy

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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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ References

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-Publisher FASB
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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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- Definition

Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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