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Equity Offerings (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 29, 2019 | Mar. 15, 2019 | Mar. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  | $ 1,866,500 |  |
Common stock, par value |  |  |  | $ 0.001 | $ 0.001
Redeemable convertible preferred stock, Par Value |  |  |  | 0.001 | $ 0.001
Preferred Stock Par Or Stated Value Per Share |  |  |  | $ 1,000 |
Preferred Stock, Dividend Rate, Percentage |  |  |  | 4.00% |
Common Stock, Convertible, Conversion Price |  |  |  | $ 479.71 |
Funds raised from aggregate issuance |  |  |  | $ 1,965,903 |
Equity, issuance cost |  |  |  | $ 34,097 |
Common Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock Value At Offering |  | $ 1,150,000 |  |  |
Common Stock Value At Offering, Per Share |  | $ 480 |  |  |
Stock Issued During Period, Shares, New Issues |  | 2,395,834 |  |  |
Common Stock Value At Offering, Underwriters' Option, Additional Shares Value |  | $ 150 |  |  |
Common stock, par value |  | $ 0.001 |  |  |
Series A Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Redeemable convertible preferred stock, Par Value | $ 0.001 |  |  |  |
PayPay, Inc. [Member] | Common Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock Value At Offering, Per Share |  | $ 436.10 |  |  |
Stock Issued During Period, Value, New Issues |  | $ 750,000 |  |  |
Stock Issued During Period, Shares, New Issues |  | 1,719,790 |  |  |
Dragoneer Investment Group [Member] | Series A Preferred Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock Issued During Period, Value, New Issues | $ 100,000 |  |  |  |
Stock Issued During Period, Shares, New Issues | 100,000 |  |  |  |
Redeemable convertible preferred stock, Par Value | $ 0.001 |  |  |  |

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