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Shareholders' Equity - Narrative (Details) - USD ($) | 3 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Class of Stock [Line Items] |  |
Net proceeds available | $ 754,866,000 |
Net proceeds from equity issuances | 220,000,000 | $ 261,943,000
Shelf Registration Statement |  |
Class of Stock [Line Items] |  |
Debt and equity securities authorized for issuance | 5,000,000,000 |
Debt and equity securities authorized for issuance value remaining | 1,400,000,000 |
At-The-Market |  |
Class of Stock [Line Items] |  |
Equity authorized | $ 1,000,000,000 |
Forward sales equity agreement (in shares) | 1,687,190 |
Net proceeds available | $ 199,800,000 |
Stock issued during period, new issues (in shares) | 2,114,488 |
Net proceeds from equity issuances | $ 220,000,000 |
Equity available for issuance | $ 281,900,000 |

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