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v3.23.3

Capital Stock - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Capital Unit [Line Items] |  |  |  |
Preferred stock, par value (dollars per share) |  | $ 50,000 |  | $ 50,000
Cumulative preferred stock (percent) | 4.50% | 4.50% |  |
Treasury shares, at cost |  | $ 363,371,000 |  | $ 361,438,000
Common stock, shares authorized (shares) |  | 180,000,000 |  |
Common stock, par value (dollars per share) |  | $ 0 |  |
Common stock, shares, outstanding (shares) |  | 39,310,511 |  | 39,213,064
Treasury stock, common, shares (shares) |  | 22,770,880 |  | 22,868,327
Preferred stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Treasury shares, at cost |  | $ 1,800,000 |  |
Cumulative Preferred Stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Preferred stock, shares authorized (shares) |  | 100,000 |  |
Preferred stock, par value (dollars per share) |  | $ 50 |  |
Cumulative preferred stock (percent) |  | 4.50% |  |
Preferred stock, callable price per share (dollars per share) |  | $ 52.50 |  |
Preferred stock, shares issued (shares) |  | 71,340 |  |
Treasury stock, preferred, shares (shares) |  | 52,998 |  |
Purchase of treasury shares (shares) |  | 0 |  |
Second Cumulative Preferred Voting Stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Preferred stock, shares authorized (shares) |  | 1,000,000 |  |
Preferred stock, par value (dollars per share) |  | $ 10 |  |
Preferred stock, shares issued (shares) |  | 0 |  |
Common Stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Purchase of treasury shares (shares) |  | 0 | 251,408 |
Common stock, shares issued (shares) |  |  |  | 62,081,391
Stock issued during period, new issues (shares) |  | 0 | 0 |
Common stock, value, issued (up to) |  | $ 100,000,000 |  |
Treasury stock |  |  |  |
Capital Unit [Line Items] |  |  |  |
Reissued shares (shares) |  | 125,967 | 203,619 |

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