Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents:
Cash and due from banks	$ 491,787	$ 279,267
Interest-bearing deposits with other banks	736,584	307,790
Total cash and cash equivalents	1,228,371	587,057
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost	442,440	91,654
Investment securities:
Available-for-sale, at fair value	6,720,001	2,470,065
Held-to-maturity, at amortized cost (fair value of $144,844 and $149,267)	139,445	148,852
Total investment securities	6,859,446	2,618,917
Loans and leases held-for-sale (includes $91,202 and $18,070 at fair value)	199,786	90,664
Loans and leases	34,497,464	19,073,020
Allowance for loan and lease losses	(113,052)	(157,446)
Loans and leases, net	34,384,412	18,915,574
Premises and equipment, net	533,138	427,534
Goodwill	1,299,878	154,757
Other intangible assets, net	168,368	20,496
Loan servicing rights	56,313	23
Other assets	1,479,401	792,936
Total assets	46,651,553	23,699,612
Deposits:
Noninterest-bearing	7,970,590	3,936,155
Interest-bearing	26,497,873	14,967,531
Total deposits	34,468,463	18,903,686
Short-term borrowings	2,669,145	0
Long-term borrowings	2,354,448	1,449,472
Other liabilities	1,432,256	790,194
Total liabilities	40,924,312	21,143,352
Equity
Preferred stock, $0.01 par value, Authorized - 2,000,000 at December 31, 2019 and 30,000,000 shares at December 31, 2018, Issued and outstanding - 7,000 shares at both December 31, 2019 and December 31, 2018	169,302	169,302
Common stock, $1.00 par value at both December 31, 2019 and December 31, 2018, Issued - 152,965,571 shares at December 31, 2019 and 88,198,460 shares at December 31, 2018	152,966	88,198
Additional paid-in capital	3,462,080	798,627
Retained earnings	1,896,427	1,766,994
Accumulated other comprehensive income (loss)	54,277	(33,138)
Treasury stock at cost and other (4,909,069 Treasury shares at December 31, 2018)	(28,037)	(252,182)
Total TCF Financial Corporation shareholders' equity	5,707,015	2,537,801
Non-controlling interest	20,226	18,459
Total equity	5,727,241	2,556,260
Total liabilities and equity	$ 46,651,553	$ 23,699,612