Regulatory Capital and Dividends (Tables)

12 Months Ended

Dec. 31, 2022

Banking and Thrift, Interest [Abstract]

Schedule of Actual and Required Capital Amounts and Ratios

The Corporation's and Bank's actual and required capital ratios as of December 31, 2022 and December 31, 2021 were as follows:

					Prompt Corrective Action Thresholds
	Actual				Basel III Minimum Capital Required				Well Capitalized
December 31, 2022	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total risk-based capital to risk-weighted assets
First Merchants Corporation	$	1,882,254	13.08	%	$	1,511,230	10.50	%	N/A		N/A
First Merchants Bank	1,822,296		12.65		1,513,064		10.50		$	1,441,014	10.00	%
Tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,558,281	10.83	%	$	1,223,377	8.50	%	N/A		N/A
First Merchants Bank	1,641,210		11.39		1,224,862		8.50		$	1,152,811	8.00	%
Common equity tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,533,281	10.65	%	$	1,007,487	7.00	%	N/A		N/A
First Merchants Bank	1,641,210		11.39		1,008,710		7.00		$	936,659	6.50	%
Tier 1 capital to average assets
First Merchants Corporation	$	1,558,281	9.10	%	$	684,758	4.00	%	N/A		N/A
First Merchants Bank	1,641,210		9.60		683,680		4.00		$	854,600	5.00	%
					Prompt Corrective Action Thresholds
	Actual				Basel III Minimum Capital Required				Well Capitalized
December 31, 2021	Amount		Ratio		Amount		Ratio		Amount		Ratio
Total risk-based capital to risk-weighted assets
First Merchants Corporation	$	1,582,481	13.92	%	$	1,193,840	10.50	%	N/A		N/A
First Merchants Bank	1,453,358		12.74		1,197,515		10.50		$	1,140,490	10.00	%
Tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,374,240	12.09	%	$	966,442	8.50	%	N/A		N/A
First Merchants Bank	1,309,685		11.48		969,417		8.50		$	912,392	8.00	%
Common equity tier 1 capital to risk-weighted assets
First Merchants Corporation	$	1,327,634	11.68	%	$	795,893	7.00	%	N/A		N/A
First Merchants Bank	1,309,685		11.48		798,343		7.00		$	741,319	6.50	%
Tier 1 capital to average assets
First Merchants Corporation	$	1,374,240	9.30	%	$	590,758	4.00	%	N/A		N/A
First Merchants Bank	1,309,685		8.88		589,994		4.00		$	737,493	5.00	%