v3.26.1
Shareholders' Equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]                
Shareholders' equity, beginning balance $ 14,908,650 $ 14,282,892 $ 13,558,890 $ 13,137,965 $ 12,780,481 $ 12,157,669 $ 13,558,890 $ 12,157,669
Other comprehensive income (loss) before reclassifications             (242) 23,366
Amounts reclassified from accumulated other comprehensive income             (14,366) (11,121)
Total other comprehensive income (loss) (4,865) (4,938) (4,805) 1,409 (5,587) 16,423 (14,608) 12,245
Shareholders' equity, ending balance 15,258,058 14,908,650 14,282,892 13,385,838 13,137,965 12,780,481 15,258,058 13,385,838
Accumulated Other Comprehensive Income (Loss)                
AOCI Attributable to Parent, Net of Tax [Roll Forward]                
Shareholders' equity, beginning balance 465,272 470,210 475,015 476,551 482,138 465,715 475,015 465,715
Total other comprehensive income (loss) (4,865) (4,938) (4,805) 1,409 (5,587) 16,423    
Shareholders' equity, ending balance 460,407 $ 465,272 470,210 477,960 $ 476,551 482,138 460,407 477,960
Available- for-Sale Securities                
AOCI Attributable to Parent, Net of Tax [Roll Forward]                
Shareholders' equity, beginning balance     209     213 209 213
Other comprehensive income (loss) before reclassifications             (242) (34)
Amounts reclassified from accumulated other comprehensive income             0 0
Total other comprehensive income (loss)             (242) (34)
Shareholders' equity, ending balance (33)     179     (33) 179
Interest Rate Agreement Cash Flow Hedges                
AOCI Attributable to Parent, Net of Tax [Roll Forward]                
Shareholders' equity, beginning balance     $ 474,806     $ 465,502 474,806 465,502
Other comprehensive income (loss) before reclassifications             0 23,400
Amounts reclassified from accumulated other comprehensive income             (14,366) (11,121)
Total other comprehensive income (loss)             (14,366) 12,279
Shareholders' equity, ending balance $ 460,440     $ 477,781     $ 460,440 $ 477,781