Earnings Per Share - Schedule of Basic and Diluted Income Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Basic income per share:
Net income attributable to Central Bancompany, Inc.	$ 390,853	$ 305,810
Less: Dividends declared on forfeitable nonvested restricted stock	667	120
Net income allocated to common stock	$ 390,186	$ 305,690
Weighted average common shares outstanding - basic (in shares)	222,352,000	220,589,000
Basic income per common share - basic (in dollars per share)	$ 1.75	$ 1.39
Earnings Per Share, Diluted [Abstract]
Net income attributable to Central Bancompany, Inc.	$ 390,853	$ 305,810
Less: Dividends declared on forfeitable nonvested restricted stock	667	120
Net income allocated to common stock	$ 390,186	$ 305,690
Weighted average common shares outstanding - diluted (in shares)	222,352,000	220,589,000
Diluted income per common share - basic (in dollars per share)	$ 1.75	$ 1.39