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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
FPU's |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Stock issued (in shares) |  |  | 1,008,731 |
FPU's | Affiliated Entity | Cantor |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Stock issued (in shares) | 1,008,731 |  |  |
Common Class A |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Treasury stock repurchases (in shares) | 3,613,098 | 0 | 4,492,341 |
Common Stock |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Dividends declared per share of common stock (dollars per share) | $ 0.01 | $ 0.01 | $ 0.02 | $ 0.11
Dividends declared and paid per share of common stock (dollars per share) | $ 0.01 | $ 0.01 | $ 0.02 | $ 0.11
Common Stock | Common Class A |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |
Grant of exchangeability, redemption and issuance of limited partnership interests and issuance of common stock (in shares) | 20,235,634 | 1,109,690 | 2,827,773,905 | 1,545,975
Treasury stock repurchases (in shares) | 3,613,098 |  | 4,492,341 |

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