v3.26.1
Consolidated Statements Of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net Income Available for Common Stock $ 138,621 $ 149,818 $ 567,934 $ 411,162
Other Comprehensive Income (Loss), Before Tax:        
Unrealized Gain (Loss) on Derivative Financial Instruments Arising During the Period 69,729 148,888 116,637 (113,675)
Reclassification Adjustment for Realized Gains on Derivative Financial Instruments in Net Income (58,170) (2,258) (22,684) (23,601)
Other Comprehensive Income (Loss), Before Tax 11,559 146,630 93,953 (137,276)
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Derivative Financial Instruments Arising During the Period 18,669 40,070 31,229 (30,593)
Reclassification Adjustment for Income Tax Expense on Realized Gains from Derivative Financial Instruments in Net Income (15,575) (608) (6,074) (6,352)
Income Taxes (Benefits) – Net 3,094 39,462 25,155 (36,945)
Other Comprehensive Income (Loss) 8,465 107,168 68,798 (100,331)
Comprehensive Income $ 147,086 $ 256,986 $ 636,732 $ 310,831