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Equity and Capital - Common Stock (Details) - USD ($) |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
May 05, 2021 | Feb. 03, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |
Common stock dividend declared, per share | $ 0.595 |  | $ 0.595 |  | $ 0.595 | $ 1.190 | $ 1.190
Common stock, dividends payable date | Oct. 05, 2021 |  |  |  |  |  |
Common stock, dividends record date | Sep. 15, 2021 |  |  |  |  |  |
Common stock, dividends declared date | Aug. 04, 2021 |  |  |  |  |  |
Net proceeds from common stock issuance |  |  |  |  |  |  | $ 125,616,000
Common stock remaining available for Issuance |  |  | 350,400,000 |  |  | 350,400,000 |
Stock Repurchase Program, Authorized Amount |  | $ 250,000,000 |  |  |  |  |
Stock Repurchase Program Expiration Date |  | Feb. 03, 2023 |  |  |  |  |
Common Stock [Member] | AOCI Attributable to Parent |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Stock Repurchased and Retired During Period, Value |  |  |  | $ 0 |  |  |
ATM Equity Offering Program [Member] | Forward Equity Offering [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Number of shares issuable |  |  |  |  |  | 2,316,760 |
Sale of stock, average offering price |  |  | $ 64.59 |  |  | $ 64.59 |
Settlement period |  |  |  |  |  | 1 year |
Net proceeds from common stock issuance |  |  |  |  |  | $ 149,600,000 |
ATM Equity Offering Program [Member] | Forward Equity Offering [Member] | Parent Company [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Number of shares settled |  |  |  |  |  | 0 |
Maximum [Member] |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |
Equity Issuances, Common Shares Authorized for Issuance |  |  | 500,000,000 |  |  | 500,000,000 |

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