The Company's Capital Ratios (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Tier 1 common	$ 11,994	$ 10,737
Tier 1 capital	14,446	18,156
Total capital	18,230	21,967
Tier 1 common	9.22%	8.08%
Tier 1 capital	11.11%	13.67%
Total capital	14.01%	16.54%
Tier 1 leverage	8.92%	10.94%
Sun Trust Bank
Tier 1 capital	13,650	13,120
Total capital	$ 16,927	$ 16,424
Tier 1 capital	10.67%	10.05%
Total capital	13.23%	12.58%
Tier 1 leverage	8.66%	8.33%

The amount of total capital as defined in the regulations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1H
-URI http://asc.fasb.org/extlink&oid=6918689&loc=d3e65071-112826
-Subparagraph (c)(1)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1H
-URI http://asc.fasb.org/extlink&oid=6918689&loc=d3e65071-112826
-Subparagraph (c)(2)

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-DEP
-Chapter 17
-Paragraph 15
-Subparagraph 3a
-IssueDate 2006-05-01
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: 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 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-DEP
-Chapter 17
-Paragraph 54
-Subparagraph 3a
-IssueDate 2006-05-01
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 6: 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

+ Details

- Definition

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

+ References+ Details

- Definition

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

+ References+ Details