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Stock-Based Compensation (Discount Stock Plan) (Details) - Discount Stock Plan shares in Millions	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount to the market price, percentage	85.00%
Measurement performance period, years	1 year
Average 2021 purchase price per share (net of discount) (in dollars per share) | $ / shares	$ 31.07
2022 number of shares purchased by employees (in shares)	0.2
Shares purchased since inception in 1982 (in shares)	23.8
Maximum shares under the plan (in shares)	27.0

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Average price per share employee purchase net of discount.

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Measurement Performance Period

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Shares purchased since inception in 1982

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Discount rate from fair value on purchase date that participants pay for shares.

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

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