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Regulatory Matters and Capital Adequacy (Tables) | 12 Months Ended
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Dec. 31, 2013
Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Abstract] |
Regulatory capital ratios | The following table presents the regulatory capital ratios for the Company and the Banks:
|  |  |  | Tier 1 |  |  | Total |  | Tier 1 |  | Total |  | Tier 1 |
(Millions, except percentages) |  |  | capital |  |  | capital |  | capital ratio |  | capital ratio |  | leverage ratio |
December 31, 2013: |  |  |  |  |  |  |  |  |  |  |  |  |
| American Express Company |  | $ | 16,174 |  | $ | 18,585 |  | 12.5 | % | 14.4 | % | 10.9 | %
| American Express Centurion Bank |  |  | 6,366 |  |  | 6,765 |  | 19.9 |  | 21.2 |  | 19.0 |
| American Express Bank, FSB |  |  | 6,744 |  |  | 7,662 |  | 15.6 |  | 17.7 |  | 17.5 | (a)
December 31, 2012: |  |  |  |  |  |  |  |  |  |  |  |  |
| American Express Company |  | $ | 14,920 |  | $ | 17,349 |  | 11.9 | % | 13.8 | % | 10.2 | %
| American Express Centurion Bank |  |  | 5,814 |  |  | 6,227 |  | 17.6 |  | 18.9 |  | 17.0 |
| American Express Bank, FSB |  |  | 6,649 |  |  | 7,556 |  | 16.5 |  | 18.7 |  | 17.5 | (a)
Well-capitalized ratios(c) |  |  |  |  |  |  |  | 6.0 | % | 10.0 | % | 5.0 | % (b)
Minimum capital ratios(c) |  |  |  |  |  |  |  | 4.0 | % | 8.0 | % | 4.0 | %
FSB leverage ratio is calculated using ending total assets as prescribed by OCC regulations applicable to federal savings banks. Represents requirements for banking subs idiaries to be considered “well-capitalized” pursuant to regulations issued under the Federal Deposit Insurance Corporation Improvement Act. There is no “we ll-capitalized” definition for the Tier 1 leverage ratio for a bank holding company. As defined by the regulations issu ed by the Federal Reserve, OCC and FDIC.

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958577-112826 + Details
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