Business Combination, Terms, Number Of Directors Of New Entity

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Common Stock, Terms Of Conversion, Conversion Ratio

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-Topic 210
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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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Business Combinations - Merger (Details)	Oct. 15, 2020 director $ / shares	Sep. 30, 2020 $ / shares	Dec. 31, 2019 $ / shares
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Class A Common Stock
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)		$ 1	$ 1
Subsequent Event
Subsequent Event [Line Items]
Number of directors \| director	14
Subsequent Event \| Class A Common Stock
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)	$ 1.00
CIT Group Inc. \| Subsequent Event
Subsequent Event [Line Items]
Common stock, par value (in dollars per share)	$ 0.01
Number of directors \| director	3
CIT Group Inc. \| Subsequent Event \| Ellen R. Alemany [Member]
Subsequent Event [Line Items]
Number of directors \| director	1
CIT Group Inc. \| Subsequent Event \| BancShares Class A Common Stock
Subsequent Event [Line Items]
Conversion rate	0.06200
CIT Group Inc. \| Subsequent Event \| Fixed-To-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series A
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.01
CIT Group Inc. \| Subsequent Event \| Non-Cumulative Perpetual Preferred Stock, Series B
Subsequent Event [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.01
Dividend rate (percentage)	5.625%
CIT Group Inc. \| Subsequent Event \| Series B Preferred Stock
Subsequent Event [Line Items]
Conversion rate	1
CIT Group Inc. \| Subsequent Event \| Series C Preferred Stock
Subsequent Event [Line Items]
Conversion rate	1
BancShares \| Subsequent Event
Subsequent Event [Line Items]
Number of directors \| director	11