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Share-Based Compensation - Additional Information (Details) |  | 12 Months Ended
--- | --- | ---
Oct. 30, 2012 shares | Dec. 31, 2019 USD ($) Installment $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2017 USD ($) $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Unrecognized stock-based compensation cost | $ |  | $ 900,000 |  |
Share based compensation outstanding number |  |  | 69,910 |
Reclassification of liability for modified equity awards | $ |  | $ 64,991,000 |  |
Unvested Weighted Average grant date fair value | $ / shares |  | $ 174.44 |  |
Modified Award [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Phantom shares vested |  | 451,480 | 356,789 |
Pre-Modification [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Phantom shares vested |  | 282,619 |  |
Post-Modification [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Phantom shares vested |  | 112,386 |  |
Restricted Stock [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Number of annual installments | Installment |  | 3 |  |
Weighted Average Grant Date Fair Value Per, Granted | $ / shares |  | $ 144.89 | $ 137.78 | $ 90.16
Weighted average grant date fair value per, vested | $ |  | $ 7,300,000 | $ 6,200,000 | $ 2,700,000
Unrecognized stock-based compensation cost | $ |  | $ 8,200,000 |  |
Unrecognized compensation costs, weighted-average recognition periods |  | 1 year 9 months 18 days |  |
Phantom shares vested |  | 51,675 |  |
Unvested Weighted Average grant date fair value | $ / shares |  | $ 135.97 | $ 107.06 |
Phantom Stock Plan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Phantom shares vested |  | 14,326 |  |
Phantom Stock Plan | Accounting Standards Update 2017-09 |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Issuance of common stock to settle stock based compensation | $ |  | $ 55,000,000.0 |  |
Reclassification of liability for modified equity awards | $ |  | $ 9,500,000 |  |
Phantom Stock Plan | Modified Award [Member] | Accounting Standards Update 2017-09 |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Weighted Average Grant Date Fair Value Per, Granted | $ / shares |  | $ 180.61 |  |
Share based compensation outstanding number |  | 409,331 |  |
Phantom Stock Plan | Director [Member] | Accounting Standards Update 2017-09 |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Issuance of common stock to settle stock based compensation | $ |  | $ 10,000,000.0 |  |
Vested Phantom Stock Plan |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Weighted Average Grant Date Fair Value Per, Granted | $ / shares |  | $ 180.84 |  |
Phantom shares vested |  | 395,005 |  |
Phantom Share Units (PSUs) |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | 1,000,000 |  |  |
Share-based compensation arrangement vesting increment percentage | 20.00% |  |  |
Share based compensation arrangement, employment period for eligibility of employees participation | 10 years |  |  |
Liability for unsettled stock awards | $ |  | $ 12,300,000 | $ 57,200,000 |
Stock Incentive Plan 2016 [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  | 2,000,000 |  |

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