EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Sep. 30, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Basic earnings per common share: | ||||||||||||
| Net income | $ 178,309 | $ 152,588 | $ 196,206 | $ 165,854 | $ 163,614 | $ 155,016 | $ 164,619 | $ 149,143 | $ 692,957 | $ 632,392 | $ 641,282 | |
| Preferred stock dividends | (7,972) | (7,968) | (7,968) | (7,965) | (7,963) | (7,964) | (7,963) | (7,964) | (31,873) | (31,854) | (31,869) | |
| Net income available to common shareholders | $ 170,337 | $ 144,620 | $ 188,238 | $ 157,889 | $ 155,651 | $ 147,052 | $ 156,656 | $ 141,179 | $ 600,538 | $ 661,084 | $ 600,538 | $ 609,413 |
| Average common shares issued and outstanding (in shares) | 819,917 | 803,412 | 819,917 | 834,205 | ||||||||
| Basic earnings per common share (in USD per share) | $ 0.21 | $ 0.18 | $ 0.23 | $ 0.19 | $ 0.19 | $ 0.18 | $ 0.19 | $ 0.17 | $ 0.73 | $ 0.82 | $ 0.73 | $ 0.73 |
| Diluted earnings per common share | ||||||||||||
| Net income available to common shareholders | $ 170,337 | $ 144,620 | $ 188,238 | $ 157,889 | $ 155,651 | $ 147,052 | $ 156,656 | $ 141,179 | $ 600,538 | $ 661,084 | $ 600,538 | $ 609,413 |
| Effect of assumed preferred stock conversion | 0 | 0 | 0 | |||||||||
| Net income applicable to diluted earnings per share | $ 661,084 | $ 600,538 | $ 609,413 | |||||||||
| Dilutive potential common shares: | ||||||||||||
| Stock options and restricted stock units and awards (in shares) | 11,633 | 11,421 | 8,418 | |||||||||
| Shares held in deferred compensation plans (in shares) | 1,912 | 1,420 | 1,351 | |||||||||
| Other (in shares) | 172 | 323 | 0 | |||||||||
| Dilutive potential common shares: (in shares) | 13,717 | 13,164 | 9,769 | |||||||||
| Total diluted average common shares issued and outstanding (in shares) | 833,081 | 817,129 | 833,081 | 843,974 | ||||||||
| Diluted earnings per common share (in USD per share) | $ 0.21 | $ 0.18 | $ 0.23 | $ 0.19 | $ 0.19 | $ 0.18 | $ 0.19 | $ 0.17 | $ 0.72 | $ 0.81 | $ 0.72 | $ 0.72 |
| Stock Option | ||||||||||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||||||||||
| Options outstanding to purchase common stock shares having antidilutive effect (in shares) | 1,600 | 2,600 | 6,600 | |||||||||
| X | ||||||||||
- Definition Incremental Common Shares Attributable To Other No definition available.
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| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- 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. No definition available.
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- Definition Amount of increase (decrease) to net income used for calculating diluted earnings per share (EPS), resulting from the assumed exercise stock options, restrictive stock units (RSUs), convertible preferred stock of an employee stock ownership plan (ESOP), and other dilutive convertible securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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