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Equity - Narrative (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Jul. 31, 2020
Class of Stock [Line Items] |  |  |  |
Common stock, shares authorized (in shares) | 280,000,000 |  | 280,000,000 |
Preferred stock, shares authorized (in shares) | 50,000,000 |  | 50,000,000 |
Common stock issued in connection with stock options exercised (in shares) | 4,304 |  |  |
Common stock issued through the dividend reinvestment plan (in shares) | 605 | 839 |  |
Number of shares of stock grants withheld (in shares) | 69,721 | 74,726 |  |
Repurchases of shares (in shares) | 0 |  |  |
Stock repurchase program, remaining authorized amount | $ 316,148,000 |  |  |
2020 Stock Repurchase Program |  |  |  |
Class of Stock [Line Items] |  |  |  |
Stock repurchase program, authorized amount |  |  |  | $ 500,000,000
Continuous Equity Program CEP V |  |  |  |
Class of Stock [Line Items] |  |  |  |
Maximum value of shares of common stock that can be sold (in dollars) | $ 1,000,000,000 |  |  |
Common stock sold under CEP V (in shares) | 0 |  |  |
Forward contract indexed to issuer's equity (in shares) |  |  | 68,577 |
Net proceeds of forward contract indexed to issuer's equity |  |  | $ 16,000,000 |
Common stock value, remaining to be authorized under continuous equity program | $ 705,961,000 |  |  |
Maximum | Continuous Equity Program CEP V |  |  |  |
Class of Stock [Line Items] |  |  |  |
Percentage of compensation received by sales agent | 1.50% |  |  |
Restricted Stock and Restricted Stock Converted From Performance Shares |  |  |  |
Class of Stock [Line Items] |  |  |  |
Equity instruments granted (in shares) | 132,135 | 149,520 |  |
Restricted stock |  |  |  |
Class of Stock [Line Items] |  |  |  |
Equity instruments granted (in shares) | 78,082 | 92,975 |  |
Stock issued during period, shares, share-based compensation, forfeited (in shares) | (1,181) | (343) |  |

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