| **Share-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 2014 and 2013:  2014 2013 2012Weighted-average expected term 8-9 years 9-10 years 8-10 yearsExpected volatility 25.20-26.22% 25.25-26.31% 25.26-26.20%Dividend yield 3.76% 3.65% 4.51-4.52%Risk-free rates 2.42-2.62% 1.82-2.00% 1.58-2.00%Weighted-average fair value of options granted during the period $10.16 $9.71 $6.78                                                                                                                                                                                                                                                                       |
| Stock Option Information                              | This is a summary of options information:(Dollars in millions, shares in thousands) Shares Weighted-average exercise price AggregateintrinsicvalueOutstanding shares at January 1, 2014 6,332 $38.39  Granted 401 46.81  Exercised (1,086) 37.59  Forfeited or expired (689) 39.49  Outstanding shares at December 31, 2014 4,958 39.10 $66       Options exercisable at end of period 4,165 $38.17 $59                                                                                                                                                                                                                                            |
| Options Outstanding And Exercisable                   | Options outstanding and exercisable consisted of the following at December 31, 2014:(Shares in thousands) Options outstanding Options exercisableRange of exercise prices Shares Weighted-averageremaining contractuallife Weighted-averageexercise price Shares Weighted-averageexercise price$25.00 to $29.99 731 4.58 years $26.58 731 $26.58$30.00 to $34.99 675 6.01 years 33.96 675 33.96$35.00 to $39.99 981 4.90 years 37.31 824 37.63$40.00 to $44.99 1,258 3.09 years 43.58 1,015 43.32$45.00 to $49.99 1,313 3.50 years 45.73 920 45.26Total 4,958 4.17 years 39.10 4,165 38.17            |
| Restricted Stock Unit Information                     | This is a summary of service-based and performance-based share information, assuming a target payout for performance-based shares, for the year 2014:(Shares in thousands) Service-basedshares Weighted-average grantdate fair value Performance-basedshares Weighted-average grantdate fair valueNonvested at January 1, 2014 936 $33.61 246 $37.66Granted 331 41.84 99 36.03Vested (271) 29.79 (60) 30.91Forfeited or canceled (28) 36.28 (2) 31.77Nonvested at December 31, 2014 968 37.42 283 38.55                                                                                                                        |

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| - Definition
Tabular 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.
+ References
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| - Definition
Tabular 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.
+ References
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| - Definition
Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.
+ References
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| - Definition
Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.
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