Stockholders' Equity - Schedule of Compliance with Regulatory Capital Requirements (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Total capital (to risk weighted assets)
Actual, Amount	$ 2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Total capital (to risk weighted assets)
Actual, Amount	2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Total capital (to risk weighted assets)
Actual, Amount	2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Total capital (to risk weighted assets)
Actual, Amount	2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Total capital (to risk weighted assets)
Actual, Amount	2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Total capital (to risk weighted assets)
Actual, Amount	2,100,000
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	12.00%
Tier 1 capital (to risk weighted assets)
Actual, Ratio %	10.00%
Hancock [Member]
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,881,558	1,783,037
Actual, Ratio %	14.28%	13.59%
Required for Minimum Capital Adequacy, Amount	1,053,781	1,049,495
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	12.65%	11.48%
Required for Minimum Capital Adequacy, Amount	526,890	524,748
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%
Tier 1 leverage capital
Actual, Amount	1,666,042	1,506,218
Actual, Ratio %	9.10%	8.17%
Required for Minimum Capital Adequacy, Amount	549,185	553,318
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%
Hancock Bank [Member]
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	643,202	437,225
Actual, Ratio %	14.39%	14.21%
Required for Minimum Capital Adequacy, Amount	357,687	246,072
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	447,109	307,590
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	586,623	397,900
Actual, Ratio %	13.12%	12.94%
Required for Minimum Capital Adequacy, Amount	178,843	123,036
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	268,265	184,554
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	586,623	397,900
Actual, Ratio %	9.13%	8.15%
Required for Minimum Capital Adequacy, Amount	192,733	146,408
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	321,221	244,013
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Whitney Bank [Member]
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	607,567	666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	607,567	666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	607,567	666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	607,567	666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	607,567	666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%
Total capital (to risk weighted assets)
Actual, Amount	1,242,608	1,277,591
Actual, Ratio %	14.25%	12.76%
Required for Minimum Capital Adequacy, Amount	697,528	801,025
Required for Minimum Capital Adequacy, Ratio %	8.00%	8.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	871,910	1,001,281
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	12.87%	10.90%
Required for Minimum Capital Adequacy, Amount	348,764	400,512
Required for Minimum Capital Adequacy, Ratio %	4.00%	4.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	523,146	600,769
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	6.00%	6.00%
Tier 1 leverage capital
Actual, Amount	1,122,341	1,091,770
Actual, Ratio %	9.24%	8.19%
Required for Minimum Capital Adequacy, Amount	364,540	399,725
Required for Minimum Capital Adequacy, Ratio %	3.00%	3.00%
To Be Well Capitalized Under Prompt Correct Action Provisions, Amount	$ 607,567	$ 666,208
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio %	5.00%	5.00%

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Balance Type:	na
Period Type:	duration

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Namespace Prefix:	hbhc_
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Period Type:	duration

- Details

Name:	hbhc_TierOneCapitalToRiskWeightedAssetsAbstract
Namespace Prefix:	hbhc_
Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

The amount of total capital as defined in the regulations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 54

-Subparagraph 3a

-IssueDate 2006-05-01

-Chapter 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 15

-Subparagraph 3a

-IssueDate 2006-05-01

-Chapter 17

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