v3.26.1
Shareholders' Equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2026
Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Shareholders' equity, beginning balance $ 14,282,892 $ 13,558,890 $ 12,780,481 $ 12,157,669 $ 13,558,890 $ 12,157,669
Other comprehensive income (loss) before reclassifications         (157) 17,976
Amounts reclassified from accumulated other comprehensive income         (9,586) (7,140)
Total other comprehensive income (loss) (4,938) (4,805) (5,587) 16,423 (9,743) 10,836
Shareholders' equity, ending balance 14,908,650 14,282,892 13,137,965 12,780,481 14,908,650 13,137,965
Accumulated Other Comprehensive Income (Loss)            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Shareholders' equity, beginning balance 470,210 475,015 482,138 465,715 475,015 465,715
Total other comprehensive income (loss) (4,938) (4,805) (5,587) 16,423    
Shareholders' equity, ending balance 465,272 470,210 476,551 482,138 465,272 476,551
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         (157) (65)
Amounts reclassified from accumulated other comprehensive income         0 0
Total other comprehensive income (loss)         (157) (65)
Shareholders' equity, ending balance 52   148   52 148
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 18,041
Amounts reclassified from accumulated other comprehensive income         (9,586) (7,140)
Total other comprehensive income (loss)         (9,586) 10,901
Shareholders' equity, ending balance $ 465,220   $ 476,403   $ 465,220 $ 476,403