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Retirement Plans - Narrative (Details) - Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits - Nonqualified Plan - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Defined Contribution Plan Disclosure [Line Items]
Deferred compensation plan (income) expense	$ (3,160,000)	$ (4,576,000)	$ 4,763,000	$ (21,873,000)
DCP participant deferrals	61,000	1,586,000	1,712,000	4,694,000
Contributions by employer	$ 0	$ 0	$ 0	$ 0
Class B Common Stock
Defined Contribution Plan Disclosure [Line Items]
Phantom shares issuable (in shares)	17,911,610		17,911,610		21,587,831

X

- Definition

Deferred Compensation Arrangement With Individual, Compensation Expense (Income)

+ References

No definition available.

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- Definition

Dividends, Common Stock, Stock, Issuable

+ References

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- Definition

Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

+ References

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- Definition

Amount of distribution made to individual in accordance with deferred compensation arrangement.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 70
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480794/715-70-50-1

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