Regulatory Capital Requirements (Tables)

12 Months Ended

Dec. 31, 2020

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule of Regulatory Capital Information for TCF and TCF Bank

Regulatory capital information for TCF and TCF Bank was as follows:

	TCF						TCF Bank
	At December 31,						At December 31,
(Dollars in thousands)	2020			2019			2020			2019			Well-capitalized Standard		Minimum Capital Requirement(1)
Regulatory Capital:
Common equity Tier 1 capital	$	4,103,007		$	4,050,826		$	4,093,974		$	4,039,191
Tier 1 capital	4,290,793			4,236,648			4,112,458			4,059,417
Total capital	5,026,611			4,681,630			4,831,026			4,524,051
Regulatory Capital Ratios:
Common equity Tier 1 capital ratio	11.45		%	10.99		%	11.45		%	10.97		%	6.50	%	4.50	%
Tier 1 risk-based capital ratio	11.98			11.49			11.50			11.03			8.00		6.00
Total risk-based capital ratio	14.03			12.70			13.51			12.29			10.00		8.00
Tier 1 leverage ratio	9.34			9.49			8.97			9.10			5.00		4.00

(1)Excludes capital conservation buffer of 2.5% at both December 31, 2020 and December 31, 2019.