Shareholders' Equity - Narrative (Details) - USD ($)	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 03, 2024
Class of Stock [Line Items]
Forward sales equity agreement, settlement in cash	$ 1,475,770,000
Net proceeds from equity issuances	379,490,000	$ 254,022,000
Shelf Registration Statement
Class of Stock [Line Items]
Debt and equity securities authorized for issuance			$ 8,000,000,000.0
Debt and equity securities authorized for issuance value remaining	6,300,000,000
At-The-Market
Class of Stock [Line Items]
Value of shares authorized for issuance	$ 1,700,000,000
Forward sales equity agreement (in shares)	3,397,596
Forward sales equity agreement, settlement in cash	$ 476,000,000.0
Shares issued (in shares)	3,300,904
Net proceeds from equity issuances	$ 379,500,000
Equity available for issuance	$ 1,200,000,000