Insider Trading Arrangements	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Terminated	false
Michael D. Cassens [Member]
Trading Arrangements, by Individual
Material Terms of Trading Arrangement		On May 15, 2024, a Rule 10b5-1 trading plan that was initially adopted on May 25, 2022, by Michael D. Cassens, a member of Busey’s board of directors, expired.
Name	Michael D. Cassens
Title	member of Busey’s board of directors
Rule 10b5-1 Arrangement Terminated	true
Termination Date	May 15, 2024