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FEDERAL HOME LOAN BANK ADVANCES (Tables)
 6 Months Ended
Jun. 30, 2026
Federal Home Loan Banks [Abstract]  
Schedule of FHLB Advances
The following table summarizes Old National Bank’s FHLB advances:
(dollars in thousands)June 30,
2026		December 31,
2025
FHLB advances (fixed rates 2.79% to 4.89%
   and variable rates 3.68% to 3.78%) maturing
   August 2026 to March 2046
$6,525,200 $6,230,200 
Fair value hedge basis adjustments and unamortized
   prepayment fees		(4,904)7,175 
Total$6,520,296 $6,237,375 
Schedule of Contractual Maturities of FHLB Advances
Contractual maturities of FHLB advances at June 30, 2026 were as follows:
(dollars in thousands) 
Due in 2026$3,500,000 
Due in 2027141,000 
Due in 2028548,000 
Due in 2029706,000 
Due in 2030479,000 
Thereafter1,151,200 
Fair value hedge basis adjustments and unamortized prepayment fees(4,904)
Total$6,520,296