Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Balance Type:	debit
Period Type:	duration

Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended			84 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Aug. 31, 2021	Feb. 28, 2021
Stockholders' Equity
Cost of shares of common stock repurchased	$ 958,194	$ 337,479	$ 1,056
Common Class A [Member]
Stockholders' Equity
Authorized stock repurchase amount					$ 2,000,000	$ 1,000,000
Shares of common stock repurchased	15,368	8,890	51	25,074
Cost of shares of common stock repurchased	$ 958,194	$ 337,479	$ 1,056	$ 1,310,621