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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
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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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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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