The maximum maturity (in years) of outstanding letters of credit issued by company.

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- Definition

Number of lawsuits naming entity as a defendant, in number of lawsuits.

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- Definition

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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- Definition

The estimated maximum amount of possible loss from the contingency.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
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-Topic 450
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-Section 50
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The carrying amount (fair value) as of the balance sheet date of securities held that had been pledged by counterparties under financing and lending arrangements, pursuant to which the entity has the right by agreement or custom to sell or re-pledge such securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5086-111524

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Contingencies (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2011 Trustmark Corporation [Member] Standby Letters of Credit [Member]	Jun. 30, 2010 Trustmark Corporation [Member] Standby Letters of Credit [Member]	Jun. 30, 2011 Trustmark National Bank [Member] Pending or Threatened Litigation [Member]
Loss Contingencies [Line Items]
Maximum potential exposure to credit loss in the event of nonperformance		$ 170.9	$ 189.1
Letters of Credit, Maturity Term - Maximum (in years)	3 Y
Collateral Held, Fair Value	$ 56.9
Lawsuits Naming Entity as Defendant, number				2