Consolidated Balance Sheets (Parenthetical) - $ / shares |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Class A Non-voting Common Stock | ||
| Common stock par value | $ 0.00001 | $ 0.00001 |
| Common stock authorized | 3,000,000,000 | 3,000,000,000 |
| Common stock issued | 1,096,653,000 | 999,304,000 |
| Common stock outstanding | 1,096,653,000 | 999,304,000 |
| Class B Voting Common Stock | ||
| Common stock par value | $ 0.00001 | $ 0.00001 |
| Common stock authorized | 700,000,000 | 700,000,000 |
| Common stock issued | 47,582,000 | 93,846,000 |
| Common stock outstanding | 47,582,000 | 93,846,000 |
| Class C Voting Common Stock | ||
| Common stock par value | $ 0.00001 | $ 0.00001 |
| Common stock authorized | 260,888,000 | 260,888,000 |
| Common stock issued | 227,914,000 | 224,611,000 |
| Common stock outstanding | 227,914,000 | 224,611,000 |