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Employee Benefit Plans - 401(k) Plan Narrative (Details) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Minimum annual employee contribution, percent	1.00%
Maximum annual employee contribution, percent	75.00%
Company contribution percent per year employed	20.00%
Defined contribution plan, expenses recognized	$ 83,500,000	$ 59,900,000	$ 46,300,000
Percent of 401(k) that can be invested in common stock	25.00%
Number of share held as investment under 401(k) Plan	1.2
Annual Base Salary of Less than $100,000
Defined Contribution Plan Disclosure [Line Items]
Percent of annual compensation match percentage	67.00%	67.00%	67.00%
Percent of annual compensation to be matched	6.00%	6.00%	6.00%
Defined benefit plan, annual compensation expense maximum	$ 100,000	$ 100,000	$ 100,000
Annual Base Salary of $100,000 or Up to $150,000
Defined Contribution Plan Disclosure [Line Items]
Percent of annual compensation match percentage	50.00%	50.00%	50.00%
Percent of annual compensation to be matched	6.00%	6.00%	6.00%
Defined benefit plan, annual compensation expense maximum	$ 150,000	$ 150,000	$ 150,000
Defined benefit plan, annual compensation expense minimum	$ 100,000,000	$ 100,000,000	$ 100,000,000

X

- Definition

Defined contribution plan minimum annual contribution per employee amount.

+ References

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- Definition

Defined Contribution Plan, Minimum Annual Contributions Per Employee, Percent

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- Definition

Number of shares of the reporting entity held as investments by employees in the reporting entity's defined benefit plan.

+ References

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- Definition

The percentage of an employee's investment that can be invested in the reporting entity's common stock.

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- Definition

Percentage vest per year employed.

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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- Definition

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

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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- Definition

Maximum amount the employee may contribute to a defined contribution plan.

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- Definition

Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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