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Equity Incentive Plan (Tables) | 12 Months Ended
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Dec. 31, 2024
Share-Based Payment Arrangement [Abstract] |
Table of Performance Share Unit Monte Carlo Assumptions [Table Text Block] |
| 2024 |  | 2023 |  | 2022
Risk-free interest rate | 4.24 | % |  | 4.71 | % |  | 4.58 | %
Expected life in years | 3 |  | 3 |  | 3
Expected volatility | 28 | % |  | 27 | % |  | 26 | %
Expected dividend yield | — |  |  | — |  |  | — |
Schedule of Stock Options, Activity |
| Number of Options |  | Weighted Average Exercise Price |  | Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2023 | 259,958 |  |  | $ | 743.30 |  |  | $ | 127.2 |
Granted | 17,170 |  |  | 1,260.97 |  |  |
Exercised | (59,443) |  |  | 382.69 |  |  |
Forfeited | (372) |  |  | 1,225.87 |  |  |
Expired | (36) |  |  | 1,484.40 |  |  |
Outstanding at December 31, 2024 | 217,277 |  |  | $ | 881.92 |  |  | $ | 79.6 |
Options exercisable at December 31, 2024 | 156,503 |  |  | $ | 765.33 |  |  | $ | 74.7 |
Schedule Shares Outstanding under Stock Option Plans, by Exercise Price Range |
Number of Options Outstanding |  | Weighted Average Exercise Price |  | Remaining Contractual Life of Options Outstanding |  | Options Exercisable
85,762 |  |  | $ | 556.79 |  |  | 2.85 |  | 85,762 |
53,015 |  |  | $ | 903.76 |  |  | 5.34 |  | 47,021 |
78,500 |  |  | $ | 1,222.38 |  |  | 8.41 |  | 23,720 |
217,277 |  |  |  |  | 5.46 |  | 156,503 |
Schedule of Stock Options, Valuation Assumptions |
| 2024 |  | 2023 |  | 2022
Risk-free interest rate | 4.31 | % |  | 4.64 | % |  | 4.35 | %
Expected life in years | 6.8 |  | 6.7 |  | 6.4
Expected volatility | 28 | % |  | 27 | % |  | 26 | %
Expected dividend yield | — |  |  | — |  |  | — |
Schedule Restricted Stock Units, Activity |
| Number of Restricted Stock Units |  | Aggregate Intrinsic Value (in millions) |  | Number of Performance Share Units |  | Aggregate Intrinsic Value (in millions)
Outstanding at December 31, 2023 | 26,739 |  |  | $32.4 |  | 10,411 |  |  | $12.6
Granted | 9,649 |  |  |  |  | 3,149 |  |  |
Adjustment for performance results achieved(1) | — |  |  |  |  | (3,047) |  |  |
Vested | (8,889) |  |  |  |  | (98) |  |  |
Forfeited | (2,071) |  |  |  |  | — |  |  |
Outstanding at December 31, 2024 | 25,428 |  |  | $31.1 |  | 10,415 |  |  | $12.7

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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