Shareholders' Equity (Tables)

6 Months Ended

Mar. 31, 2024

Equity [Abstract]

Schedule of Reconciliation of Changes in Stockholders Equity

The following tables present a reconciliation of changes in stockholders' equity for the three and six months ended March 31, 2024 and 2023.

	Common stock			Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Retained Earnings		Total
	Number of Shares	Stated Value
	(In thousands, except share and per share data)
Balance, September 30, 2023	148,492,783	$	742	$	6,684,120	$	518,528	$	3,666,674	$	10,870,064
Net income	—	—		—		—		311,292		311,292
Other comprehensive loss	—	—		—		(49,936)		—		(49,936)
Cash dividends ($0.805 per share)	—	—		—		—		(119,898)		(119,898)
Common stock issued:
Public and other stock offerings	2,177,864	11		257,757		—		—		257,768
Stock-based compensation plans	163,750	1		3,918		—		—		3,919
Balance, December 31, 2023	150,834,397	754		6,945,795		468,592		3,858,068		11,273,209
Net income	—	—		—		—		432,023		432,023
Other comprehensive income	—	—		—		27,108		—		27,108
Cash dividends ($0.805 per share)	—	—		—		—		(121,667)		(121,667)
Common stock issued:
Public and other stock offerings	34,687	—		4,025		—		—		4,025
Stock-based compensation plans	5,468	—		3,941		—		—		3,941
Balance, March 31, 2024	150,874,552	$	754	$	6,953,761	$	495,700	$	4,168,424	$	11,618,639

	Common stock			Additional Paid-in Capital		Accumulated Other Comprehensive Income (Loss)		Retained Earnings		Total
	Number of Shares	Stated Value
	(In thousands, except share and per share data)
Balance, September 30, 2022	140,896,598	$	704	$	5,838,118	$	369,112	$	3,211,157	$	9,419,091
Net income	—	—		—		—		271,860		271,860
Other comprehensive income	—	—		—		22,218		—		22,218
Cash dividends ($0.74 per share)	—	—		—		—		(104,552)		(104,552)
Common stock issued:
Public and other stock offerings	2,147,210	11		223,768		—		—		223,779
Stock-based compensation plans	111,953	1		3,877		—		—		3,878
Balance, December 31, 2022	143,155,761	716		6,065,763		391,330		3,378,465		9,836,274
Net income	—	—		—		—		357,671		357,671
Other comprehensive loss	—	—		—		(30,333)		—		(30,333)
Cash dividends ($0.74 per share)	—	—		—		—		(106,173)		(106,173)
Common stock issued:
Public and other stock offerings	1,316,930	6		143,808		—		—		143,814
Stock-based compensation plans	11,959	—		3,952		—		—		3,952
Balance, March 31, 2023	144,484,650	$	722	$	6,213,523	$	360,997	$	3,629,963	$	10,205,205

Schedule of Forward Sales Agreements

Additionally, we had $889.7 million in available proceeds from outstanding forward sale agreements, as detailed below.

Maturity	Shares Available	Net Proceeds Available (In thousands)		Forward Price
September 30, 2024	861,655	$	101,838	$	118.19
December 31, 2024	2,176,974	251,971		$	115.74
June 30, 2025	4,695,737	535,871		$	114.12
Total	7,734,366	$	889,680	$	115.03

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables provide the components of our accumulated other comprehensive income (loss) balances, net of the related tax effects allocated to each component of other comprehensive income (loss).

	Available- for-Sale Securities		Interest Rate Agreement Cash Flow Hedges		Total
	(In thousands)
September 30, 2023	$	(369)	$	518,897	$	518,528
Other comprehensive income (loss) before reclassifications	246		(18,091)		(17,845)
Amounts reclassified from accumulated other comprehensive income	—		(4,983)		(4,983)
Net current-period other comprehensive income (loss)	246		(23,074)		(22,828)
March 31, 2024	$	(123)	$	495,823	$	495,700

	Available- for-Sale Securities		Interest Rate Agreement Cash Flow Hedges		Total
	(In thousands)
September 30, 2022	$	(495)	$	369,607	$	369,112
Other comprehensive income (loss) before reclassifications	221		(7,276)		(7,055)
Amounts reclassified from accumulated other comprehensive income	—		(1,060)		(1,060)
Net current-period other comprehensive income (loss)	221		(8,336)		(8,115)
March 31, 2023	$	(274)	$	361,271	$	360,997