v3.26.1
Shareholders' Equity (Tables)
 6 Months Ended
Mar. 31, 2026
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, 2026 and 2025.
 Common stockAdditional
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, 2025
161,568,384 $808 $8,221,455 $475,015 $4,861,612 $13,558,890 
Net income— — — — 402,964 402,964 
Other comprehensive loss— — — (4,805)— (4,805)
Cash dividends ($1.00 per share)
— — — — (160,407)(160,407)
Common stock issued:
Public and other stock offerings3,709,647 18 474,625 — — 474,643 
Stock-based compensation plans156,446 1 11,606 — — 11,607 
Balance, December 31, 2025165,434,477 827 8,707,686 470,210 5,104,169 14,282,892 
Net income— — — — 581,899 581,899 
Other comprehensive loss— — — (4,938)— (4,938)
Cash dividends ($1.00 per share)
— — — — (168,760)(168,760)
Common stock issued:
Public and other stock offerings1,445,607 7 205,376 — — 205,383 
Stock-based compensation plans38,226 1 12,173 — — 12,174 
Balance, March 31, 2026166,918,310 $835 $8,925,235 $465,272 $5,517,308 $14,908,650 
 Common stockAdditional
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, 2024
155,258,845 $776 $7,474,559 $465,715 $4,216,619 $12,157,669 
Net income— — — — 351,858 351,858 
Other comprehensive income— — — 16,423 — 16,423 
Cash dividends ($0.87 per share)
— — — — (135,453)(135,453)
Common stock issued:
Public and other stock offerings3,329,358 17 383,520 — — 383,537 
Stock-based compensation plans137,862 1 6,446 — — 6,447 
Balance, December 31, 2024158,726,065 794 7,864,525 482,138 4,433,024 12,780,481 
Net income— — — — 485,576 485,576 
Other comprehensive loss— — — (5,587)— (5,587)
Cash dividends ($0.87 per share)
— — — — (138,416)(138,416)
Common stock issued:
Public and other stock offerings26,367 — 3,841 — — 3,841 
Stock-based compensation plans82,691 — 12,070 — — 12,070 
Balance, March 31, 2025158,835,123 $794 $7,880,436 $476,551 $4,780,184 $13,137,965 
Schedule of Forward Sales Agreements
MaturityShares AvailableNet Proceeds Available
(In thousands)		Forward Price
June 30, 2026963,081 $127,346 $132.23 
December 31, 20263,392,352 475,986 $140.31 
March 31, 20271,873,444 286,793 $153.08 
Total6,228,877 $890,125 $142.90 
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, 2025$209 $474,806 $475,015 
Other comprehensive income (loss) before reclassifications(157)— (157)
Amounts reclassified from accumulated other comprehensive income— (9,586)(9,586)
Net current-period other comprehensive income (loss)(157)(9,586)(9,743)
March 31, 2026$52 $465,220 $465,272 
 
Available-
for-Sale
Securities		Interest Rate
Agreement
Cash Flow
Hedges		Total
 (In thousands)
September 30, 2024$213 $465,502 $465,715 
Other comprehensive income (loss) before reclassifications(65)18,041 17,976 
Amounts reclassified from accumulated other comprehensive income— (7,140)(7,140)
Net current-period other comprehensive income (loss)(65)10,901 10,836 
March 31, 2025$148 $476,403 $476,551