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Equity (Common Stock Changes in Number of Shares Issued, Held in Treasury and Oustanding) (Details) - shares | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  | 85,310,598 | 85,310,598 |  |
Common Stock Issuable [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  | 85,310,598 | 85,310,598 | 85,310,598 | 85,310,598
Stock Issued During Period, Shares, New Issues |  | 0 |  |  |
Stock Based Compensation Shares | [1] | 0 | 0 | 0 |
Treasury Stock, Shares, Acquired |  |  | 0 | 0 |
Common Stock Held In Treasury [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  | 19,689,885 | 18,634,390 | 18,139,868 | 17,353,697
Stock Issued During Period, Shares, New Issues |  | (1,372,131) |  |  |
Stock Based Compensation Shares | [1] | (316,636) | (104,732) | (65,866) |
Treasury Stock, Shares, Acquired |  |  | (599,254) | (852,037) |
Common Stock Outstanding [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Shares, Issued |  | 65,620,713 | 66,676,208 | 67,170,730 | 67,956,901
Stock Issued During Period, Shares, New Issues |  | (1,372,131) |  |  |
Stock Based Compensation Shares | [1] | (316,636) | (104,732) | (65,866) |
Treasury Stock, Shares, Acquired |  |  | (599,254) | (852,037) |
[1] | Represents net shares issued from treasury pursuant to the Company’s stock-based compensation programs.

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