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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2023
Stock-Based Compensation Plans [Abstract] |
Schedule Of Comparative Date For Performance Stock Units |
|  | 2023 Awards |  |  | 2022 Awards |  |  | 2021 Awards |
TSR Awards |  |  |  |  |  |  |  |  |
Shares of stock granted - target |  | 8,107 |  |  | 7,983 |  |  | 6,277 |
Per-share fair value | $ | 633.32 |  | $ | 595.70 |  | $ | 599.04 |
Volatility |  | 25.5 | % |  | 30.4 | % |  | 30.2 | %
Risk-free interest rate |  | 4.3 | % |  | 1.7 | % |  | 0.2 | %
EPS Awards |  |  |  |  |  |  |  |  |
Shares of stock granted - target |  | 8,107 |  |  | 7,983 |  |  | 6,277 |
Per-share fair value | $ | 515.12 |  | $ | 459.77 |  | $ | 491.34 |
Common Assumptions |  |  |  |  |  |  |  |  |
Service period (years) |  | 2.9 |  |  | 2.9 |  |  | 2.9 |
Three-year measurement period ends December 31, |  | 2025 |  |  | 2024 |  |  | 2023 |
Schedule Of Total Stock Option, Stock Award And PSU Activity |
| Stock Options |  | Stock Awards |  | Performance Units (PSUs)
|  |  |  |  |  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  | Weighted Average |  |  | Aggregate |  |  |  |  | Average |  |  |  |  | Weighted
|  |  |  |  |  | Remaining |  |  | Intrinsic |  |  |  |  | Grant-Date |  | Number of |  |  | Average
| Number of |  |  | Exercise |  | Contractual |  |  | Value |  | Number of |  |  | Per-Share |  | Target |  |  | Grant-Date
| Options |  |  | Price |  | Life (Years) |  |  | (thousands) |  | Awards |  |  | Fair Value |  | Units |  |  | Price
Outstanding at December 31, 2022 | 1,181,154 |  | $ | 432.75 |  |  |  |  |  |  | - |  | $ | - |  | 37,490 |  | $ | 543.11
Granted | 315,555 |  |  | 509.46 |  |  |  |  |  |  | 2,646 |  |  | 545.69 |  | 21,802 |  |  | 557.23
Exercised/Vested | (370,105) |  |  | 406.45 |  |  |  |  |  |  | (2,646) |  |  | 545.69 |  | (15,138) |  |  | 544.36
Canceled/ Forfeited | (9,381) |  |  | 455.42 |  |  |  |  |  |  | - |  |  | - |  | - |  |  | -
Outstanding at December 31, 2023 | 1,117,223 |  | $ | 462.94 |  | 3.3 |  | $ | 134,531 |  | - |  | $ | - |  | 44,154 |  | $ | 549.65
Vested and expected to vest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
at December 31, 2023 | 1,117,223 |  | $ | 462.94 |  | 3.3 |  | $ | 134,531 |  | - |  | $ | - |  | 49,231 | * | $ | 546.47
Exercisable at December 31, 2023 | 494,064 |  |  | 437.24 |  | 2.2 |  |  | 72,191 |  | n.a. |  |  | n.a. |  | n.a. |  |  | n.a.
* Amount includes 9,918 share units which vested and were converted to shares of stock and distributed in the first quarter of 2024.
Schedule Of Comparative Data For Stocks Option, Stock Awards And PSUs |
|  | Years Ended December 31,
|  | 2023 |  |  | 2022 |  |  | 2021
Total compensation expense of stock-based compensation |  |  |  |  |  |  |  |
plans charged against income | $ | 40,793 |  | $ | 33,613 |  | $ | 31,420
Total income tax benefit recognized in income for stock |  |  |  |  |  |  |  |
based compensation expense charged against income |  | 9,709 |  |  | 8,487 |  |  | 7,918
Total intrinsic value of stock options exercised |  | 54,681 |  |  | 53,339 |  |  | 62,038
Total intrinsic value of stock awards vested during the period |  | 1,444 |  |  | 1,170 |  |  | 1,173
Per-share weighted average grant-date fair value of |  |  |  |  |  |  |  |
stock awards granted |  | 545.69 |  |  | 496.25 |  |  | 482.66
Schedule Of Valuation Assumptions |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Stock price on date of issuance | $ | 509.46 |  | $ | 462.04 |  | $ | 445.35 |
Grant date fair value per option | $ | 111.24 |  | $ | 104.69 |  | $ | 96.91 |
Number of options granted |  | 315,555 |  |  | 312,598 |  |  | 326,806 |
Expected term (years) |  | 3.5 |  |  | 3.5 |  |  | 3.5 |
Risk free rate of return |  | 4.99 | % |  | 4.39 | % |  | 0.87 | %
Volatility |  | 19.24 | % |  | 22.29 | % |  | 28.81 | %
Dividend yield |  | 0.3 | % |  | 0.3 | % |  | 0.3 | %
Forfeiture rate |  | - |  |  | - |  |  | - |
Schedule Of Other Data For Stock Options, Stock Awards And PSUs |
|  | Stock |  |  | Stock |  |  |
|  | Options |  |  | Awards |  |  | PSUs
Total unrecognized compensation at the end of the year | $ | 60,819 |  | $ | - |  | $ | 10,125
Weighted average period over which unrecognized compensation to be recognized (years) |  | 2.2 |  |  | - |  |  | 1.6
Actual income tax benefit realized | $ | 12,139 |  | $ | 321 |  | $ | 1,478
Aggregate intrinsic value vested and expected to vest | $ | 134,531 |  | $ | - |  | $ | 28,719

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