v3.21.2

EQUITY - NARRATIVE (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 77 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Oct. 25, 2021 | May 31, 2015
Common Shares |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Authorized amount of issued and outstanding common shares available for repurchase |  |  |  |  |  |  | $ 500,000,000
Repurchase of common shares (in shares) | 1,298,384 | 0 | 1,298,384 | 2,546,000 | 8,551,824 |  |
Repurchase of common shares for the period | $ 100,000,000 |  | $ 100,000,000 | $ 100,000,000 | $ 500,000,000 |  |
Common Stock Issued and Outstanding | Subsequent event |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Authorized amount of issued and outstanding common shares available for repurchase |  |  |  |  |  | $ 500,000,000 |

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