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Capital and Regulatory Matters | 12 Months Ended
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Dec. 31, 2014
Regulatory Capital Requirements [Abstract] |
Capital and Regulatory Matters | Capital and Regulatory Matters Regulatory Capital Requirements in Effect as of December 31, 2014. Banks and bank holding companies are subject to various regulatory capital requirements administered by state and federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weighting and other factors. Quantitative measures established by regulations to ensure capital adequacy require the maintenance of minimum amounts and ratios (set forth in the table below) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital to adjusted quarterly average assets (as defined). Cullen/Frost’s and Frost Bank’s Tier 1 capital consists of shareholders’ equity excluding unrealized gains and losses on securities available for sale, the accumulated gain or loss on effective cash flow hedging derivatives, the net actuarial gain/loss on the Corporation’s defined benefit post-retirement benefit plans, goodwill and other intangible assets. Tier 1 capital for Cullen/Frost also includes $144.5 million of 5.375% non-cumulative perpetual preferred stock and $133 million of trust preferred securities issued by its unconsolidated subsidiary trusts. Cullen/Frost’s and Frost Bank’s total capital is comprised of Tier 1 capital for each entity plus a permissible portion of the allowance for loan losses and outstanding subordinated debt. The Corporation’s aggregate $100 million of floating rate subordinated notes are not included in Tier 1 capital but the permissible portion (which decreases 20% per year during the final five years of the term of the notes) totaling $40 million at December 31, 2014 and $60 million at December 31, 2013, is included in total capital of Cullen/Frost. The Tier 1 and total capital ratios are calculated by dividing the respective capital amounts by risk-weighted assets. Risk-weighted assets are calculated based on regulatory requirements and include total assets, excluding goodwill and other intangible assets, allocated by risk weight category, and certain off-balance-sheet items (primarily loan commitments). The leverage ratio is calculated by dividing Tier 1 capital by adjusted quarterly average total assets, which exclude goodwill and other intangible assets. As further discussed below, in July 2013, Cullen/Frost’s and Frost Bank’s primary federal regulator, the Federal Reserve, published final rules establishing a new comprehensive capital framework for U.S. banking organizations which will become effective on January 1, 2015 (subject to a phase-in period for certain provisions). Year-end actual and required capital ratios for Cullen/Frost and Frost Bank were as follows:
| Actual |  | Minimum Required for Capital Adequacy Purposes |  | Required to be Considered Well Capitalized
| Capital Amount |  | Ratio |  | Capital Amount |  | Ratio |  | Capital Amount |  | Ratio
2014 |  |  |  |  |  |  |  |  |  |  |
Total Capital to Risk-Weighted Assets |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | $ | 2,325,818 |  |  | 14.55 | % |  | $ | 1,278,797 |  |  | 8.00 | % |  | $ | 1,598,496 |  |  | 10.00 | %
Frost Bank | 2,071,012 |  |  | 12.99 |  |  | 1,275,858 |  |  | 8.00 |  |  | 1,594,823 |  |  | 10.00 |
Tier 1 Capital to Risk-Weighted Assets |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | 2,186,276 |  |  | 13.68 |  |  | 639,398 |  |  | 4.00 |  |  | 959,098 |  |  | 6.00 |
Frost Bank | 1,979,415 |  |  | 12.41 |  |  | 637,929 |  |  | 4.00 |  |  | 956,894 |  |  | 6.00 |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | 2,186,276 |  |  | 8.16 |  |  | 1,072,035 |  |  | 4.00 |  |  | 1,340,043 |  |  | 5.00 |
Frost Bank | 1,979,415 |  |  | 7.40 |  |  | 1,070,109 |  |  | 4.00 |  |  | 1,337,636 |  |  | 5.00 |
2013 |  |  |  |  |  |  |  |  |  |  |
Total Capital to Risk-Weighted Assets |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | $ | 2,110,774 |  |  | 15.52 | % |  | $ | 1,088,349 |  |  | 8.00 | % |  | $ | 1,360,437 |  |  | 10.00 | %
Frost Bank | 1,780,313 |  |  | 13.12 |  |  | 1,085,447 |  |  | 8.00 |  |  | 1,356,809 |  |  | 10.00 |
Tier 1 Capital to Risk-Weighted Assets |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | 1,958,336 |  |  | 14.39 |  |  | 544,175 |  |  | 4.00 |  |  | 816,262 |  |  | 6.00 |
Frost Bank | 1,707,307 |  |  | 12.58 |  |  | 542,724 |  |  | 4.00 |  |  | 814,085 |  |  | 6.00 |
Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
Cullen/Frost | 1,958,336 |  |  | 8.49 |  |  | 922,728 |  |  | 4.00 |  |  | 1,153,410 |  |  | 5.00 |
Frost Bank | 1,707,307 |  |  | 7.42 |  |  | 920,107 |  |  | 4.00 |  |  | 1,150,134 |  |  | 5.00 |
Management believes that, as of December 31, 2014, Cullen/Frost and its bank subsidiary, Frost Bank, were “well capitalized” based on the ratios presented above. Cullen/Frost and Frost Bank are subject to the regulatory capital requirements administered by the Federal Reserve and, for Frost Bank, the Federal Deposit Insurance Corporation (“FDIC”). Regulatory authorities can initiate certain mandatory actions if Cullen/Frost or Frost Bank fail to meet the minimum capital requirements, which could have a direct material effect on the Corporation’s financial statements. Management believes, as of December 31, 2014, that Cullen/Frost and Frost Bank meet all capital adequacy requirements to which they are subject. Trust Preferred Securities. In accordance with the applicable accounting standard related to variable interest entities, the accounts of the Corporation’s wholly owned subsidiary trust, Cullen/Frost Capital Trust II and WNB Capital Trust I, have not been included in the Corporation’s consolidated financial statements. However, the $133.0 million in trust preferred securities issued by these subsidiary trusts have been included in the Tier 1 capital of Cullen/Frost for regulatory capital purposes pursuant to guidance from the Federal Reserve. As more fully discussed below, new rules related to the implementation of the Basel III capital framework will require the phase-out of certain hybrid securities, such as trust preferred securities, as Tier 1 capital of bank holding companies beginning January 1, 2015. Preferred Stock. On February 15, 2013, the Corporation issued and sold 6,000,000 shares, or $150.0 million in aggregate liquidation preference, of it’s 5.375% Non-Cumulative Perpetual Preferred Stock, Series A, par value $0.01 and liquidation preference $25 per share (“Series A Preferred Stock”). Dividends on the Series A Preferred stock, if declared, accrue and are payable quarterly, in arrears, at a rate of 5.375%. The Series A Preferred Stock qualifies as Tier 1 capital for the purposes of the regulatory capital calculations. The net proceeds from the issuance and sale of the Series A Preferred Stock, after deducting underwriting discount and commissions, and the payment of expenses, were approximately $144.5 million. The net proceeds from the offering were used to fund the accelerated share repurchase further discussed below. Stock Repurchase Plans. From time to time, the Corporation’s board of directors has authorized stock repurchase plans. In general, stock repurchase plans allow the Corporation to proactively manage its capital position and return excess capital to shareholders. Shares purchased under such plans also provide the Corporation with shares of common stock necessary to satisfy obligations related to stock compensation awards. The accelerated share repurchase discussed below was part of a stock repurchase program that was authorized by the Corporation’s board of directors in December 2012 to buy up to $150.0 million of the Corporation’s common stock. As of December 31, 2014, the Corporation did not have any active stock repurchase plans. Accelerated Share Repurchase. Concurrent with the issuance and sale of the Series A Preferred Stock, on February 12, 2013, the Corporation entered into an accelerated share repurchase agreement (the “ASR agreement”) with Goldman, Sachs & Co. (“Goldman Sachs”). Under the ASR agreement, the Corporation paid $144.0 million to Goldman Sachs and received from Goldman Sachs 1,905,077 shares of the Corporation’s common stock, representing approximately 80% of the estimated total number of shares to be repurchased. Goldman Sachs borrowed such shares delivered to the Corporation from stock lenders, and during the term of the ASR agreement, purchased shares in the open market to return to those stock lenders. Final settlement of the ASR agreement occurred on August 13, 2013 and the Corporation received an additional 331,671 shares. The total number of shares that the Corporation repurchased was based on the volume-weighted-average price per share of the Corporation’s common stock during the repurchase period as adjusted pursuant to the terms and conditions of the ASR agreement. Dividend Restrictions. In the ordinary course of business, Cullen/Frost is dependent upon dividends from Frost Bank to provide funds for the payment of dividends to shareholders and to provide for other cash requirements. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of Frost Bank to fall below specified minimum levels. Approval is also required if dividends declared exceed the net profits for that year combined with the retained net profits for the preceding two years. Under the foregoing dividend restrictions and while maintaining its “well capitalized” status, at December 31, 2014, Frost Bank could pay aggregate dividends of up to $363.9 million to Cullen/Frost without prior regulatory approval. Under the terms of the junior subordinated deferrable interest debentures that Cullen/Frost has issued to Cullen/Frost Capital Trust II and WNB Capital Trust I, Cullen/Frost has the right at any time during the term of the debentures to defer the payment of interest at any time or from time to time for an extension period not exceeding 20 consecutive quarterly periods with respect to each extension period. In the event that the Corporation has elected to defer interest on the debentures, the Corporation may not, with certain exceptions, declare or pay any dividends or distributions on its capital stock or purchase or acquire any of its capital stock. Under the terms of the Series A Preferred Stock, in the event that the Corporation does not declare and pay dividends on the Series A Preferred Stock for the most recent dividend period, the Corporation may not, with certain exceptions, declare or pay dividends on, or purchase, redeem or otherwise acquire, shares of its common stock or any securities of the Corporation that rank junior to the Series A Preferred Stock. Basel III Capital Rules Effective January 1, 2015. In July 2013, Cullen/Frost’s and Frost Bank’s primary federal regulator, the Federal Reserve, published final rules (the “Basel III Capital Rules”) establishing a new comprehensive capital framework for U.S. banking organizations. The rules implement the Basel Committee’s December 2010 framework known as “Basel III” for strengthening international capital standards as well as certain provisions of the Dodd-Frank Act. The Basel III Capital Rules substantially revise the risk-based capital requirements applicable to bank holding companies and depository institutions, including Cullen/Frost and Frost Bank, compared to the current U.S. risk-based capital rules. The Basel III Capital Rules define the components of capital and address other issues affecting the numerator in banking institutions’ regulatory capital ratios. The Basel III Capital Rules also address risk weights and other issues affecting the denominator in banking institutions’ regulatory capital ratios and replace the existing risk-weighting approach, which was derived from the Basel I capital accords of the Basel Committee, with a more risk-sensitive approach based, in part, on the standardized approach in the Basel Committee’s 2004 “Basel II” capital accords. The Basel III Capital Rules also implement the requirements of Section 939A of the Dodd-Frank Act to remove references to credit ratings from the federal banking agencies’ rules. The Basel III Capital Rules are effective for Cullen/Frost and Frost Bank on January 1, 2015 (subject to a phase-in period for certain provisions).

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- Definition The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time. + References Reference 1: 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 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 1D -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958573-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1E -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958574-112826 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1F -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958575-112826 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958569-112826 Reference 7: 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=7881181&loc=d3e65071-112826 Reference 8: 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 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958572-112826 + Details
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