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Common Shares (Narrative) (Details) - USD ($) | 2 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Feb. 17, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 31, 2021
Number of common and preferred stock authorized to issue |  | 185,000,000 |  |  |
Common shares, authorized |  | 175,000,000 | 175,000,000 |  |
Preferred shares, authorized |  | 10,000,000 |  |  |
Common Stock, Shares, Outstanding |  | 103,300,000 |  |  |
Preferred Stock, Shares Outstanding |  | 0 |  |  |
Common shares issued |  | 5,416 | 0 | 3,599 |
Common shares issued |  | $ 759,209,000 | $ 0 | $ 353,213,000 |
Cash distributions declared to equity holders per share |  | $ 3.32 | $ 3.32 | $ 3.20 |
2020 ATM program [Member] |  |  |  |  |
Maximum aggregate offering price of common shares |  | $ 362,700,000 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  |  |  | $ 200,000
Common shares issued |  | 2,900,000 |  |  |
Total net consideration |  | $ 358,800,000 |  |  |
Shares Issued, Price Per Share |  | $ 126.64 |  |  |
2021 ATM program |  |  |  |  |
Maximum aggregate offering price of common shares |  | $ 500,000,000 |  |  |
Common shares issued |  | 2,600,000 |  |  |
Total net consideration |  | $ 400,400,000 |  |  |
Shares Issued, Price Per Share |  | $ 157.57 |  |  |
Subsequent Event [Member] |  |  |  |  |
Cash distributions declared to equity holders per share | $ 0.94 |  |  |  |
April 2007 Repurchase Plan [Member] |  |  |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 500,000,000 |  |  |
April 2007 Repurchase Plan [Member] | Subsequent Event [Member] |  |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ 269,500,000 |  |  |  |

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