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Equity - Activity for Class B Common Stock and Treasury Stock (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)	17,441,863	10,966,089	16,094,488	10,174,013
Stock Award Activity (in shares)	(12,050)	(11,750)	(1,704,592)	(724,674)
Purchase of Treasury Stock (in shares)	2,877,691	993,100	5,917,608	2,498,100
Ending Balance (in shares)	20,307,504	11,947,439	20,307,504	11,947,439
Class B Shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance (in shares)	92,063,593	98,539,367	93,410,968	99,331,443
Stock Award Activity (in shares)	12,050	11,750	1,704,592	724,674
Purchase of Treasury Stock (in shares)	(2,877,691)	(993,100)	(5,917,608)	(2,498,100)
Ending Balance (in shares)	89,197,952	97,558,017	89,197,952	97,558,017
Purchase of Treasury Stock (in shares)			5,900,000

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- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The increase (decrease) during the period in the number of shares issued.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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