Share-based Compensation - Additional Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($) tranche $ / shares shares	Mar. 31, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $	$ 49,288	$ 2,425
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| tranche	2
Shares issued (in shares)	20,600,000
Number of nonvested shares (in shares)	17,800,000
Percent with service award vesting conditions	50.00%
Percent with performance award vesting conditions	50.00%
Risk free interest rate	2.43%
Expected volatility rate	30.00%
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $	$ 0	0
Initial Public Offering, Performance Tranche
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of nonvested shares (in shares)	10,300,000
Service period	3 years
Share-based compensation expense \| $	$ 10,000
Grant date fair value (in dollars per share) \| $ / shares	$ 12.97
Initial Public Offering, Performance Tranche \| Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	5 years
Top-up Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest rate	2.43%
Expected volatility rate	30.00%
Service period	3 years
Options, granted in period (in shares)	12,700,000
Expected dividend yield	1.00%
Initial Public Offering, Service Tranche
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of nonvested shares (in shares)	7,400,000
Share-based compensation expense \| $	$ 12,000
Grant date fair value (in dollars per share) \| $ / shares	$ 14.00
Top-up Options, Service-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $	$ 18,000
Weighted average fair value (in dollars per share) \| $ / shares	$ 5.02
Nonvested options outstanding (in shares)	4,700,000
Top-up Options, Performance-based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense \| $	$ 2,000
Weighted average fair value (in dollars per share) \| $ / shares	$ 5.04
Nonvested options outstanding (in shares)	6,400,000
2018 Omnibus Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Service period	10 years
Share-based compensation expense \| $	$ 0	$ 0
2018 Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest rate	2.52%
Expected volatility rate	30.00%
Options, granted in period (in shares)	4,000,000
Expected dividend yield	1.00%
Weighted average fair value (in dollars per share) \| $ / shares	$ 4.35
Nonvested options outstanding (in shares)	4,000,000
Expected average exercise term	6 years 6 months
2018 RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of nonvested shares (in shares)	1,081,995
Grant date fair value (in dollars per share) \| $ / shares	$ 14.00
RSUs granted in period (in shares)	1,100,000

Share-based Compensation Arrangement by Share-based Payment Award, Number of Tranches

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Share-based Compensation Arrangement by Share-based Payment Award, Percent with Performance Award Vesting Conditions

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Share-based Compensation Arrangement by Share-based Payment Award, Percent with Service Award Vesting Conditions

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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-Publisher FASB
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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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).

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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.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of non-vested options outstanding.

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Weighted average grant-date fair value of options vested.

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