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Stock-based Compensation - 2011 and 2015 Equity Incentive Plans (Details) - shares shares in Thousands	Dec. 31, 2021	Apr. 15, 2021	Dec. 31, 2020	Jun. 13, 2018	May 01, 2015	Sep. 23, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options issued (in shares)	2,549		4,070
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	2,087		1,737
LSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	1,084
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	319
2011 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options issued (in shares)	4,800
2011 Plan | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)			3,800
2011 Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)						9,100
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options issued (in shares)	2,800		2,800
2015 Plan | RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	4,500		3,500
2015 Plan | LSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	1,100		1,200
2015 Plan | PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards issued (in shares)	300
2015 Plan | Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		15,400		10,500	6,000

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Number of options outstanding, including both vested and non-vested options.

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