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COMMON STOCK (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 34 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Mar. 31, 2021 | Nov. 19, 2020 | Jul. 31, 2019 | Jun. 08, 2018
Common Stock Outstanding Roll Forward [Roll Forward] |  |  |  |  |  |  |  |  |
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above) |  |  |  |  | (21,000,949) | (282,914,994) |  |  |
Ending balance common stock, shares outstanding (in shares) | 457,080,367 |  |  |  | 457,080,367 |  |  |  |
Value of shares repurchased | $ 202,845 | $ 522,673 | $ 631,237 | $ 749,998 | $ 725,518 | $ 7,729,288 |  |  |
Availability remaining under its stock repurchase program | $ 1,270,712 |  |  |  | $ 1,270,712 |  |  |  |
Common stock, shares outstanding (in shares) | 457,080,367 |  |  |  | 457,080,367 |  |  |  |
Share repurchase authorized |  |  |  |  |  |  | $ 2,000,000 |  | $ 2,000,000
Total shares authorized for repurchase |  |  |  |  |  |  |  |  |
Common Stock Outstanding Roll Forward [Roll Forward] |  |  |  |  |  |  |  |  |
Share repurchase authorized | $ 9,000,000 |  |  |  | $ 9,000,000 |  |  |  |
2019 Share Repurchase Authorization [Member] |  |  |  |  |  |  |  |  |
Common Stock Outstanding Roll Forward [Roll Forward] |  |  |  |  |  |  |  |  |
Share repurchase authorized |  |  |  |  |  |  |  | $ 5,000,000 |
Common Class A |  |  |  |  |  |  |  |  |
Common Stock Outstanding Roll Forward [Roll Forward] |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding, Beginning Balance |  | 290,573,672 |  |  | 290,573,672 |  |  |  |
Conversion of Class B common stock to Class A common stock |  |  |  |  | 99,678 |  |  |  |
Option exercises |  |  |  |  | 918,764 |  |  |  |
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above) |  |  |  |  | (21,000,949) |  |  |  |
Treasury shares reissued |  |  |  |  | 692,977 |  |  |  |
Ending balance common stock, shares outstanding (in shares) | 271,284,142 |  |  |  | 271,284,142 |  |  |  |
Common stock, shares outstanding (in shares) | 271,284,142 |  |  |  | 271,284,142 |  |  |  |
Number of shares of common stock converted (in shares) |  |  |  |  | 99,678 |  |  |  |
Common Class B |  |  |  |  |  |  |  |  |
Common Stock Outstanding Roll Forward [Roll Forward] |  |  |  |  |  |  |  |  |
Common Stock, Shares, Outstanding, Beginning Balance |  | 185,895,903 |  |  | 185,895,903 |  |  |  |
Conversion of Class B common stock to Class A common stock |  |  |  |  | (99,678) |  |  |  |
Option exercises |  |  |  |  | 0 |  |  |  |
Repurchase and retirement of Class A common shares in connection with the Company's share repurchase plan (discussed above) |  |  |  |  | 0 |  |  |  |
Ending balance common stock, shares outstanding (in shares) | 185,796,225 |  |  |  | 185,796,225 |  |  |  |
Common stock, shares outstanding (in shares) | 185,796,225 |  |  |  | 185,796,225 |  |  |  |
Number of shares of common stock converted (in shares) |  |  |  |  | (99,678) |  |  |  |

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