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Equity - Issuance of Class B Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Jul. 31, 2020
Common Class B |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Number of shares issued in transaction (in shares) | 54,744,525 |  |  |
Common stock par value (in dollars per share) |  | $ 0.01 | $ 0.01 | $ 0.01
Consideration received on transaction | $ 450 |  |  |
Common Stock |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |
Common stock par value (in dollars per share) |  | $ 0.01 | $ 0.01 |

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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