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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Payout Range, Percent

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Achievement, Revenue Compounded Annual Growth Rate Period

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Performance Achievement, Total Shareholder Return Performance Period

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Discount rate from fair value on purchase date that participants pay for shares.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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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.

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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.

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of shares for which recognition of cost was accelerated for award under share-based payment arrangement.

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Purchase price of common stock expressed as a percentage of its fair value.

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Stock Based Compensation - Narrative (Details)			1 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended
Stock Based Compensation - Narrative (Details)	Jul. 06, 2020 shares	Feb. 08, 2019 $ / shares shares	Dec. 31, 2020 USD ($) shares	Feb. 07, 2019 USD ($) $ / shares shares	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) profitInterestUnit shares	Dec. 31, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash value per share of stock repurchased and retired during period (USD per share) \| $ / shares		$ 145
Acceleration charge \| $				$ 10,400,000				$ 56,300,000
Stock authorized for issuance (shares)			40,000,000			40,000,000	40,000,000
Stock available for grant (shares)			31,647,101			31,647,101	31,647,101
Period for recognition of unrecognized compensation cost related to unvested equity awards							2 years 6 months
Unrecognized compensation expense of outstanding stock options \| $			$ 15,100,000			$ 15,100,000	$ 15,100,000		$ 0
Maximum contributions per employee (as a percent)							50.00%
Stock-based compensation expense \| $				11,700,000			$ 45,100,000	11,700,000	10,800,000
Expected tax benefit \| $				$ 0			$ 6,400,000	0	2,300,000
Stock options exercisable (shares)			4,160,000	55,174		4,160,000	4,160,000
Total intrinsic value of stock options exercised during period \| $									600,000
Cash received from stock options exercised during period \| $									700,000
Expected tax benefit associated with tax deduction from exercise of stock options \| $									$ 100,000
ESPP, discount rate on common stock (as a percent)							15.00%
ESPP, stock issued during period (shares)							0		53,785
ESPP, offering period							6 months
ESPP, cash received from employees participating during period \| $									$ 5,300,000
Restricted stock and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested equity awards \| $			$ 13,000,000.0			$ 13,000,000.0	$ 13,000,000.0
Period for recognition of unrecognized compensation cost related to unvested equity awards							2 years
Stock-based compensation expense \| $				$ 11,700,000			$ 3,100,000	$ 0	9,600,000
Number of unvested equity instruments other than options forfeited (shares)							0
Number of equity instruments other than options unvested (shares)			702,899			702,899	702,899	0
Grant date fair value per share (USD per share) \| $ / shares							$ 25.95
Expected tax benefit \| $				0			$ 500,000	$ 0	2,300,000
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of equity instruments other than options vested in period \| $				39,800,000					19,800,000
Expected tax benefit \| $				9,500,000					$ 4,800,000
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested equity awards \| $				$ 5,700,000
Number of unvested equity instruments other than options forfeited (shares)				869
Number of equity instruments other than options unvested (shares)				148,094					143,236
Total shareholder return ("TSR") performance period for performance evaluation									3 years
Revenue compounded annual growth rate period for performance evaluation									3 years
Grant date fair value per share (USD per share) \| $ / shares				$ 0					$ 143.63
Performance-based Restricted Stock Units \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Duration of stock price appreciation/ depreciation during period for performance evaluation									1 year
Performance-based Restricted Stock Units \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Duration of stock price appreciation/ depreciation during period for performance evaluation									2 years
Performance-based Restricted Stock Units \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Duration of stock price appreciation/ depreciation during period for performance evaluation									3 years
Performance-based Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout range for restricted stock units (as a percent)									0.00%
Performance-based Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payout range for restricted stock units (as a percent)									200.00%
Service-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested equity awards \| $				$ 4,600,000
Number of unvested equity instruments other than options forfeited (shares)				869
Number of equity instruments other than options unvested (shares)				125,327					122,757
Grant date fair value per share (USD per share) \| $ / shares									$ 123.54
Service-based Restricted Stock Units \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)							1 year
Service-based Restricted Stock Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)									3 years
Service-based Restricted Stock Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)									5 years
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $				$ 0	$ 20,000,000.0		$ 23,000,000.0	0	$ 0
Expected tax benefit \| $				0			$ 5,900,000	0	$ 0
Stock options exercisable (shares)									55,174
Employee stock purchase plan ("ESPP")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Minimum contributions per employee (as a percent)			3.00%
Maximum contributions per employee (as a percent)			15.00%
Holding period of ESPP employer contribution							1 year
Stock-based compensation expense \| $				$ 0			$ 0	0	$ 1,200,000
Purchase price of stock (as a percent)							85.00%
Profit Interest Units and Phantom Units \| Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock authorized for issuance (shares)		19,629.25045
Vesting period (in years)							3 years
Profit Interest Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $								$ 56,300,000
Number of equity instruments other than options converted (shares)	18,245.79
Profit Interest Units \| Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options outstanding (shares)								18,443.42000
Number of equity instruments other than options granted (shares)								18,443.42000
Class B Profit Interest Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of profit interest units granted (shares) \| profitInterestUnit								6,817.74280
Class C Profit Interest Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of profit interest units granted (shares) \| profitInterestUnit								15,867.80780
Phantom Units \| Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity instruments other than options outstanding (shares)								249.10000
Number of equity instruments other than options granted (shares)								249.10000
Common Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Acceleration charge \| $							$ 3,400,000
Total unrecognized compensation cost related to unvested equity awards \| $			$ 15,000,000.0			$ 15,000,000.0	$ 15,000,000.0
Period for recognition of unrecognized compensation cost related to unvested equity awards							1 year 6 months
Number of equity instruments other than options outstanding (shares)			14,795,207			14,795,207	14,795,207
Number of equity instruments other than options issued upon conversion (shares)	15,055,564
Number of equity instruments other than options with vesting accelerated (shares)							1,342,909
Number of unvested equity instruments other than options forfeited (shares)						260,357
Number of equity instruments other than options unvested (shares)			9,730,550			9,730,550	9,730,550