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Stock-Based Compensation - Vesting and Deferred Compensation Plan (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Performance share and restricted stock awards |  |  |
Unrecognized compensation cost related to stock options | $ 34.7 |  |
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards | 1 year 2 months 12 days |  |
Stock option awards |  |  |
Number of Shares |  |  |
Outstanding at the beginning of the period (in shares) | 1,433 |  |
Stock options granted (in shares) | 117 |  |
Options exercised (in shares) | (521) |  |
Options forfeited (in shares) | (154) |  |
Outstanding at the end of the period (in shares) | 875 | 1,433 |
Vested and exercisable at the end of the period (in shares) | 402 |  |
Intrinsic value of options exercised | $ 118.2 | $ 23.5 | $ 57.9
Weighted Average Price |  |  |
Outstanding at the beginning of the period (in dollars per share) | $ 199.79 |  |
Options granted (in dollars per share) | 320.38 |  |
Options exercised (in dollars per share) | 154.37 |  |
Options forfeited (in dollars per share) | 284.63 |  |
Outstanding at the end of the period (in dollars per share) | 227.97 | $ 199.79 |
Vested and exercisable at the end of the period (in dollars per share) | $ 164.81 |  |
Weighted average contractual term | 6 years 4 months 24 days |  |
The weighted average contractual term of options exercisable | 4 years 7 months 6 days |  |
Aggregate intrinsic value of options outstanding | $ 123.3 |  |
Aggregate intrinsic value of options vested and exercisable | 81.9 |  |
Performance share and restricted stock awards |  |  |
Unrecognized compensation cost related to stock options | $ 11.1 |  |
Vesting period of shares awarded under the Program | 3 years |  |
Restricted stock awards |  |  |
Performance share and restricted stock awards |  |  |
Unrecognized compensation cost related to stock options | $ 9.1 |  |
Vesting period of shares awarded under the Program | 3 years |  |
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards | 1 year 8 months 12 days |  |
Intrinsic value of shares vested during year ended December 31 | $ 18.5 | $ 10.7 | $ 15.7
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |  |  |
Outstanding at beginning of period (shares) | 126 |  |
Awards granted (in shares) | 36 |  |
Awards vested (in shares) | (53) |  |
Awards forfeited (in shares) | (9) |  |
Outstanding at end of period (shares) | 100 | 126 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Outstanding at beginning of period (in dollars per share) | $ 205.96 |  |
Awards granted (in dollars per share) | 337.83 | $ 250.83 | $ 227.44
Award vested (in dollars per share) | 170.01 |  |
Awards forfeited (in dollars per share) | 285.75 |  |
Outstanding at end of period (in dollars per share) | $ 265.53 | $ 205.96 |
Weighted average contractual term | 1 year |  |
Aggregate intrinsic value | $ 36.9 |  |
Performance share awards |  |  |
Performance share and restricted stock awards |  |  |
Unrecognized compensation cost related to stock options | $ 10.7 |  |
Vesting period of shares awarded under the Program | 3 years |  |
Weighted average period of recognition of unrecognized compensation cost related to restricted stock awards | 1 year 8 months 12 days |  |
Fair value of shares vested during year ended December 31 | $ 31.0 | $ 19.9 | $ 22.0
Measurement period | 3 years |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] |  |  |
Outstanding at beginning of period (shares) | 118 |  |
Awards granted (in shares) | 24 |  |
Awards vested (in shares) | (96) |  |
Awards converted (in shares) | 48 |  |
Awards forfeited (in shares) | (4) |  |
Outstanding at end of period (shares) | 90 | 118 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Outstanding at beginning of period (in dollars per share) | $ 285.97 |  |
Awards granted (in dollars per share) | 467.92 | $ 368.47 | $ 313.77
Award vested (in dollars per share) | 213.19 |  |
Awards converted (in dollars per share) | 213.19 |  |
Awards forfeited (in dollars per share) | 405.35 |  |
Outstanding at end of period (in dollars per share) | $ 368.42 | $ 285.97 |
Weighted average contractual term | 9 months 18 days |  |
Aggregate intrinsic value | $ 33.1 |  |
Deferred Compensation Equity |  |  |
Performance share and restricted stock awards |  |  |
Number of common stock deferred (in shares) | 59 | 63 |

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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option 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)(1)(iv)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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