Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Forward sales equity agreement, settlement in cash	$ 473,472,000
Net proceeds from equity issuances	254,022,000	$ 220,000,000
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	3,100,000,000
At-The-Market
Class of Stock [Line Items]
Value of shares authorized for issuance	$ 1,000,000,000
Forward sales equity agreement (in shares)	2,284,076
Forward sales equity agreement, settlement in cash	$ 261,400,000
Shares issued (in shares)	2,144,558
Net proceeds from equity issuances	$ 254,000,000
Equity available for issuance	$ 499,100,000