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Stock-Based Compensation (Discount Stock Plan) (Details) - Discount Stock Plan shares in Millions | 12 Months Ended
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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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- Definition Number of shares purchased by employees + References No definition available. + Details
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- Definition Discount rate from fair value on purchase date that participants pay for shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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