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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
Stock Options |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Employee stock options granted during the period (in shares) | 271 | 263
Fair value per share (in dollars per share) | $ 181.63 | $ 173.72
Cash received from exercise of options | $ 91.0 | $ 88.1
Restricted Stock Awards |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock awards granted (in shares) | 403 | 368
Weighted-average grant date fair value (in dollars per share) | $ 601.02 | $ 555.12
Restricted stock awards vested during period (in shares) | 102 | 105
Weighted average grant date fair value per share (in dollars per share) | $ 479.88 | $ 438.44
Weighted average vest date fair value per share (in dollars per share) | $ 579.12 | $ 555.71
Performance / Market - Based |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Restricted stock awards granted (in shares) | 74 | 72
Weighted-average grant date fair value (in dollars per share) | $ 663.42 | $ 563.03
Vesting period (in years) | 3 years |
Performance / Market - Based | Maximum |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Award vesting rights, percentage | 200.00% |
Employee Stock Purchase Plan |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Percentage of eligible earnings to purchase common stock through the employee stock purchase plan | 10.00% |
Discount on the average closing price for the employee stock purchase plan | 10.00% |
Shares of stock purchased during the period by participants in the employee stock purchase plan (in shares) | 26 | 21
Proceeds from issuance of shares under employee stock purchase plan | $ 12.5 | $ 10.3

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- Definition The weighted average fair value as of vest dates pertaining to a share-based award plan other than a stock option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares, other instruments, or cash in accordance with the terms of the arrangement. + References No definition available. + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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