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Equity - Changes in Number of Shares Outstanding (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares upon vesting of restricted stock units (in shares)	850	1,553	867
Issue of shares on exercises of stock options (in shares)	438
Common Stock | Class A Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of year (in shares)	723,999	650,065
Issue of shares for employee stock purchase plan (in shares)	2,510	4,378
Exchange of Class B common stock for Class A common stock (in shares)	194,885	65,995
Repurchase and cancellation of Class A common stock (in shares)	(17,628)	0
Balance at end of year (in shares)	909,142	723,999	650,065
Common Stock | Class A Common Stock | RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares upon vesting of restricted stock units (in shares)	4,968	3,548
Common Stock | Class A Common Stock | Options
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares on exercises of stock options (in shares)	408	13
Common Stock | Class B Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of year (in shares)	311,433	377,428
Issue of shares for employee stock purchase plan (in shares)	0	0
Exchange of Class B common stock for Class A common stock (in shares)	(194,885)	(65,995)
Repurchase and cancellation of Class A common stock (in shares)	0	0
Balance at end of year (in shares)	116,548	311,433	377,428
Common Stock | Class B Common Stock | RSUs
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares upon vesting of restricted stock units (in shares)	0	0
Common Stock | Class B Common Stock | Options
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issue of shares on exercises of stock options (in shares)	0	0

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