Face (par) amount of debt instrument at time of issuance.

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- Definition

Weighted average interest rate of debt outstanding.

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- Definition

The cash outflow from the repayment of long-term borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in case of liquidation of the entity's assets before its maturity.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Tier 2 risk-based capital as defined in the regulations.

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- Definition

Common securities proportion to junior subordinated debentures.

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- Definition

Consecutive quarters of deferred payment

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Number Of Unconsolidated Subsidiary Trusts

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- Definition

Ownership Interest Percentage In Unconsolidated Subsidiary Trusts

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- Definition

Trust preferred securities proportion to junior subordinated debentures.

+ References

No definition available.

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Junior Subordinated Debentures (Narrative) (Details)	1 Months Ended	12 Months Ended
Junior Subordinated Debentures (Narrative) (Details)	Jan. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) trust quarter Rate	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Subordinated Borrowing [Line Items]
Percentage ownership interest in subsidiary trusts		100.00%
Number of unconsolidated subsidiary trusts \| trust		11
Common securities, approximate percentage of junior subordinated debentures		3.00%
Trust preferred securities, approximate percentage of junior subordinated debentures		97.00%
Gain on early extinguishment		$ 0	$ 0	$ 3,588,000
Junior subordinated debentures		$ 253,566,000	253,566,000
Consecutive quarters of deferred payment \| quarter		20
Wintrust Capital Trust VIII
Subordinated Borrowing [Line Items]
Debt acquired	$ 15,000,000
Trust preferred securities, face amount issued	40,000,000.0
Extinguished amount of junior subordinated debentures	15,000,000
Gain on early extinguishment	$ 4,300,000
Junior Subordinated Debt
Subordinated Borrowing [Line Items]
Junior subordinated debentures		$ 253,566,000	$ 253,566,000
Weighted average interest rate \| Rate		4.94%
Tier 2 regulatory capital		$ 245,500,000