|**Stock-Based Associate Compensation Plans (Tables)**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|**Share-based Compensation [Abstract]**                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Assumptions Used In Option Grants Issued                         | The following weighted average assumptions were used in determining fair value for option grants issued during 2013 and 2012:20132012Weighted-average expected term9-10 years8-10 yearsExpected volatility25.25-26.31%25.26-26.20%Dividend yield3.65%4.51-4.52%Risk-free rates1.82-2.00%1.58-2.00%Weighted-average fair value of options granted during the period$9.71$6.78                                                                                                                                                                                   
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|Weighted-average expected term                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Expected volatility                                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Dividend yield                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Risk-free rates                                                  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Weighted-average fair value of options granted during the period |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|Stock Option Information                                         | This is a summary of options information:(Dollars in millions, shares in thousands)SharesWeighted-averageexercise priceAggregateintrinsicvalueOutstanding shares at January 1, 20137,937$37.34Granted39444.70Exercised(1,440)35.98Forfeited or expired(559)34.07Outstanding shares at December 31, 20136,33238.39$88Options exercisable at end of period5,360$38.33$75                                                                                                                                                                                         
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|(Dollars in millions, shares in thousands)                       |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Outstanding shares at January 1, 2013                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Granted                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Exercised                                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Forfeited or expired                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Outstanding shares at December 31, 2013                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|Options exercisable at end of period                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|Options Outstanding And Exercisable                              | Options outstanding and exercisable consisted of the following at December 31, 2013:(Shares in thousands)Options outstandingOptions exercisableRange of exercise pricesSharesWeighted-averageremaining contractuallifeWeighted-averageexercise priceSharesWeighted-averageexercise price$25.00 to $29.991,0115.34 years$26.571,011$26.57$30.00 to $34.997647.04 years33.9750033.97$35.00 to $39.991,5854.01 years37.791,25838.35$40.00 to $44.991,8853.16 years43.071,50442.66$45.00 to $49.991,0871.95 years45.261,08745.26Total6,3323.98 years38.395,36038.33
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|(Shares in thousands)                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Range of exercise prices                                         |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|$25.00 to $29.99                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|$30.00 to $34.99                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|$35.00 to $39.99                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|$40.00 to $44.99                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|$45.00 to $49.99                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Total                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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|Restricted Stock Unit Information                                | This is a summary of restricted stock unit and performance-based share information, assuming a target payout for performance-based shares, for the year 2013:(Shares in thousands)Service-basedsharesWeighted-average grantdate fair valuePerformance-basedsharesWeighted-average grantdate fair valueNonvested at January 1, 2013930$28.18209$31.26Granted31740.0910142.17Vested(289)23.33(61)23.98Forfeited or canceled(22)32.90(3)23.80Nonvested at December 31, 201393633.6124637.66                                                                       
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|(Shares in thousands)                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Nonvested at January 1, 2013                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Granted                                                          |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Vested                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Forfeited or canceled                                            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Nonvested at December 31, 2013                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
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X- DefinitionTabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901+ Details**Name:**
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                    duration X- DefinitionTabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901+ Details**Name:**
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