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Employee Benefit Plans - Additional Information (Details) - USD ($)		12 Months Ended
	Dec. 31, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019	Nov. 06, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100.00%	100.00%
Contributes percentage	4.00%	6.00%
Matching and discretionary contributions expense		$ 14,200,000	$ 11,200,000	$ 10,600,000
Authorized amount		$ 25,000
Number of ESPP issuable					500,000
Market price		90.00%
Brokerage commissions and administrative fees, percentage		10.00%
Total share issued		8,857	705	8,895
Nonqualified Deferred Compensation Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributes percentage		6.00%
Deferred Compensation Plan, Maximum Percentage of Deferment of Participant's Salary		50.00%
Deferred Compensation Plan, Maximum percentage of participant's Bonus or Board Fee		100.00%
Accrued Liabilities | Nonqualified Deferred Compensation Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Liability, Current		$ 20,300,000	$ 17,600,000
Investment in Rabbi Trust [Member] | Nonqualified Deferred Compensation Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Plan Assets, Fair Value Disclosure		$ 20,600,000	$ 9,000,000.0

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- Definition

Fair value amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

No definition available.

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Percentage of deferment of participant's salary under the deferred compensation plan.

+ References

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- Definition

Maximum percentage of participants bonus or board fee under the deferred compensation plan.

+ References

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- Definition

Employee Purchase Plan Purchase Price Percentage of Fair Market Value.

+ References

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- Definition

Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

+ References

No definition available.

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- Definition

Employee Stock Purchase Plan, Percent Of Base Earnings

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Employee Stock Purchase Program Authorized Amount.

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable within one year (or the operating cycle, if longer). Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

+ References

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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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Amount of cost for defined contribution plan.

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- Definition

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

+ References

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

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Number of shares issued during the period as a result of an employee stock purchase plan.

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