Common Equity Tier 1 Capital, Dollar value

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- Definition

Common Equity Tier 1 Capital, percent

+ References

No definition available.

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- Definition

Common Equity tier 1 to be well capitalized

+ References

No definition available.

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- Definition

Percentage of aggregate shares that have been authorized to be repurchased.

+ References

No definition available.

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- Definition

Common Equity tier 1 capital

+ References

No definition available.

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- 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 5
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- References

No definition available.

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- Definition

The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The Total risk based capital ratio (total capital divided by risk weighted assets) required to be categorized as "well capitalized", in the regulatory framework for prompt corrective action.

+ References

+ Details

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- Definition

Total Capital divided by risk weighted assets as defined in the regulations.

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-Publisher FASB
-Name Accounting Standards Codification
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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.

+ References

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

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-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
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- Definition

Tier 1 Leverage Capital as defined in the regulations. Also called Core Capital.

+ References

+ Details

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- References

No definition available.

+ Details

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- Definition

The minimum amount of Tier 1 Leverage Capital for capital adequacy purposes divided by average assets as defined in the regulations.

+ References

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- Definition

The amount of Tier 1 Leverage Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action.

+ References

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- Definition

Tier 1 Leverage Capital divided by average assets as defined in the regulations.

+ References

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- Definition

Tier 1 Risk Based Capital as defined in the regulations.

+ References

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- References

No definition available.

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- Definition

The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
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- Definition

The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action.

+ References

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- Definition

Tier 1 capital divided by risk weighted assets as defined by regulations.

+ References

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CAPITAL AND REGULATORY MATTERS (Details) - USD ($) $ in Thousands				12 Months Ended
	Dec. 31, 2016	Jan. 27, 2016	Dec. 11, 2014	Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
BXS_CommonEquityTierOneCapitalRequiredToBeWellCapitalizedToriskweightedassets (in Hundredths)	6.50%
Tier one core capital required for capital adequacy to risk-weighted assets (in hundredths)	4.00%			4.00%
Tier one total capital required for capital adequacy to risk-weighted assets (in hundredths)	8.00%			8.00%
Tier one leverage ratio required for capital adequacy to average assets (in hundredths)	4.00%			4.00%
Tier one risk based capital required to be well capitalized to risk-weighted assets (in hundredths)	8.00%			8.00%
Total capital required to be well capitalized to risk-weighted assets (in hundredths)	10.00%			10.00%
Tier one leverage capital required to be well capitalized to average assets (in hundredths)	5.00%			5.00%
Stock Repurchase Program, Number of Shares Authorized to be Repurchased		7,000,000	5,764,000
Percent of Aggregate Shares Authorized to be repurchased			6.00%
Stock Repurchased During Period, Shares		2,882,000		988,060
Common Equity Tier 1 Capital (to risk-wieghted assets) [Abstract]
bxs_Common Equity Tier 1 Capital to Risk weighted assets (in hundredths)				12.23%	12.07%
Bxs_Common Equity Tier 1 Capital				$ 1,467,979	$ 1,402,041
Tier I capital (to risk-weighted assets) [Abstract]
Tier I capital	$ 1,480,867			$ 1,480,867	$ 1,425,239
Tier I capital to risk-weighted assets (in hundredths)	12.34%			12.34%	12.27%
Total capital (to risk-weighted assets) [Abstract]
Total capital	$ 1,605,257			$ 1,605,257	$ 1,552,280
Total capital to risk-weighted assets (in hundredths)	13.38%			13.38%	13.37%
Tier I leverage capital (to average assets) [Abstract]
Tier I leverage capital	$ 1,480,867			$ 1,480,867	$ 1,425,239
Tier I leverage capital to average assets (in hundredths)	10.32%			10.32%	10.61%
BancorpSouth Bank [Member]
Common Equity Tier 1 Capital (to risk-wieghted assets) [Abstract]
bxs_Common Equity Tier 1 Capital to Risk weighted assets (in hundredths)				10.94%	11.80%
Bxs_Common Equity Tier 1 Capital				$ 1,311,542	$ 1,369,419
Tier I capital (to risk-weighted assets) [Abstract]
Tier I capital	$ 1,311,542			$ 1,311,542	$ 1,369,419
Tier I capital to risk-weighted assets (in hundredths)	10.94%			10.94%	11.80%
Total capital (to risk-weighted assets) [Abstract]
Total capital	$ 1,435,932			$ 1,435,932	$ 1,496,460
Total capital to risk-weighted assets (in hundredths)	11.97%			11.97%	12.90%
Tier I leverage capital (to average assets) [Abstract]
Tier I leverage capital	$ 1,311,542			$ 1,311,542	$ 1,369,419
Tier I leverage capital to average assets (in hundredths)	9.17%			9.17%	10.23%