Share-Based Associate Compensation Plans (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2022 USD ($) Peers peers_exceeded compensation_plans shares	Dec. 31, 2021 USD ($) peers_exceeded Peers shares	Dec. 31, 2020 USD ($) peers_exceeded Peers shares
Share-based Compensation Arrangement by Share-based Payment Award
Number of equity compensation plans \| compensation_plans	4
Maximum number of shares awarded to each full-time employee for their service \| shares	10
Share based compensation	$ 29	$ 26	$ 25
Tax benefit from compensation expense	7	6	6
Options exercised, intrinsic value	21	24	15
Options vested, intrinsic value	2	15	7
Unrecognized compensation costs related to non-vested awards	$ 39
Expected weighted-average period to recognize the unrecognized compensation costs related to non-vested awards	1 year 9 months 18 days
Proceeds from stock options exercised	$ 10	13	7
Shares of common stock granted in period (in shares) \| shares	469,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Awards exercise peirod	10 years
Awards vesting period	3 years
Proceeds from stock options exercised	$ 10	$ 13	$ 7
Shares repurchased \| shares	80,538	77,947	50,751
Shares repurchased, value	$ 10	$ 8	$ 5
Weighted average remaining contractual term	8 years 5 months 23 days
Shares authorized to be granted under the shareholder-approved plans \| shares	17,300,000
Shares available for future issuance under the plans \| shares	4,600,000
Stock Options \| Directors
Share-based Compensation Arrangement by Share-based Payment Award
Shares of common stock granted in period (in shares) \| shares	11,563
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	2.19%	2.62%	2.15%
Weighted-average expected term	2 years 10 months 9 days	2 years 10 months 6 days	2 years 10 months 9 days
Risk-free rates	1.64%	0.20%	1.30%
Performance Shares \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Number of peers exceeded \| peers_exceeded	1	6	8
Number of peers in peer group \| Peers	8	9	9
Shares, Issued \| shares	52,335	113,648
Awards vesting period	3 years	3 years
Risk-free rates, minimum	0.00%	0.00%	0.00%
Risk-free rates, maximum	200.00%	200.00%	200.00%
share based performance metric for performance shares	3 years
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Intrinsic Value Aggregate	$ 6	$ 11	$ 5
Service Based Shares \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award
Awards vesting period	3 years
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Intrinsic Value Aggregate	$ 32	$ 26	$ 30

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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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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Net number of share options (or share units) granted during the period.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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