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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2012
Employee Stock Option Plan [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Weighted-Average Assumptions |
| 2012 |  | 2011 |  | 2010
Dividend yield (1) | 2.7 | % |  | 2.7 | % |  | 2.7 | %
Expected volatility (2) | 45.5 | % |  | 41.6 | % |  | 41.0 | %
Risk-free interest rate (3) | 0.8 | % |  | 1.4 | % |  | 2.0 | %
Expected term of options (in years) (4) | 4.1 |  |  | 4.2 |  |  | 4.3 |
Weighted-average grant-date fair value | $ | 6 |  |  | $ | 8 |  |  | $ | 6 |
Summary Of Stock Option Activity |
| 2012
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 7,555 |  |  | $ | 21 |  |  |  |  |
Granted | 2,641 |  |  | 20 |  |  |  |  |
Exercised | (689 | ) |  | 15 |  |  |  |  | $ | 3,810 |
Forfeited | (646 | ) |  | 21 |  |  |  |  |
Outstanding at End of Year | 8,861 |  |  | 21 |  |  | 3.4 Yrs |  | $ | 11,730 |
Exercisable at End of Year | 3,003 |  |  | $ | 19 |  |  | 2.2 Yrs |  | $ | 7,617 |
| 2011
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 6,805 |  |  | $ | 17 |  |  |  |  |
Granted | 2,462 |  |  | 29 |  |  |  |  |
Exercised | (1,497 | ) |  | 16 |  |  |  |  | $ | 20,659 |
Forfeited | (215 | ) |  | 19 |  |  |  |  |
Outstanding at End of Year | 7,555 |  |  | 21 |  |  | 3.5 Yrs |  | $ | 66,295 |
Exercisable at End of Year | 2,024 |  |  | $ | 17 |  |  | 2.3 Yrs |  | $ | 26,218 |
| 2010
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 8,419 |  |  | $ | 16 |  |  |  |  |
Granted | 2,197 |  |  | 21 |  |  |  |  |
Exercised | (3,564 | ) |  | 17 |  |  |  |  | $ | 20,706 |
Forfeited | (247 | ) |  | 16 |  |  |  |  |
Outstanding at End of Year | 6,805 |  |  | 17 |  |  | 3.5 Yrs |  | $ | 85,374 |
Exercisable at End of Year | 1,767 |  |  | $ | 16 |  |  | 2.3 Yrs |  | $ | 23,810 |
Schedule Of Non-Vested Stock Option Activity |
| 2012 |  | 2011 |  | 2010
| Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value
Nonvested stock options at Beginning of Year | 5,530 |  |  | $ | 6 |  |  | 5,038 |  |  | $ | 5 |  |  | 4,662 |  |  | $ | 4 |
Granted | 2,641 |  |  | 6 |  |  | 2,462 |  |  | 8 |  |  | 2,197 |  |  | 6 |
Vested | (1,936 | ) |  | 5 |  |  | (1,766 | ) |  | 5 |  |  | (1,642 | ) |  | 4 |
Forfeited | (377 | ) |  | 6 |  |  | (204 | ) |  | 5 |  |  | (179 | ) |  | 4 |
Nonvested stock options at End of Year | 5,858 |  |  | $ | 6 |  |  | 5,530 |  |  | $ | 6 |  |  | 5,038 |  |  | $ | 5 |
Non-Employee Director Stock Option Plan [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule Of Weighted-Average Assumptions |
| 2012 |  | 2011 |  | 2010
Dividend yield (1) | 2.6 | % |  | 2.7 | % |  | 2.7 | %
Expected volatility (2) | 44.5 | % |  | 40.5 | % |  | 40.8 | %
Risk-free interest rate (3) | 1.7 | % |  | 3.2 | % |  | 3.5 | %
Expected term of options (in years) (4) | 6.8 |  |  | 6.5 |  |  | 8.1 |
Weighted-average grant-date fair value | $ | 8 |  |  | $ | 11 |  |  | $ | 8 |
Summary Of Stock Option Activity |
| 2012
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 192 |  |  | $ | 21 |  |  |  |  |
Granted | 42 |  |  | 22 |  |  |  |  |
Exercised | — |  |  | — |  |  |  |  |  |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 234 |  |  | 21 |  |  | 6.4 Yrs |  | $ | 225 |
Exercisable at End of Year | 234 |  |  | $ | 21 |  |  | 6.4 Yrs |  | $ | 225 |
| 2011
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 244 |  |  | $ | 18 |  |  |  |  |
Granted | 42 |  |  | 32 |  |  |  |  |
Exercised | (94 | ) |  | 17 |  |  |  |  | $ | 1,362 |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 192 |  |  | 21 |  |  | 6.8 Yrs |  | $ | 1,740 |
Exercisable at End of Year | 192 |  |  | $ | 21 |  |  | 6.8 Yrs |  | $ | 1,740 |
| 2010
| Shares (000) |  | Wtd. Avg. Ex. Price |  | Wtd. Avg. Remaining Contract Life |  | Aggregate Intrinsic Value (000)
Outstanding at Beginning of Year | 429 |  |  | $ | 16 |  |  |  |  |
Granted | 48 |  |  | 21 |  |  |  |  |
Exercised | (233 | ) |  | 16 |  |  |  |  | $ | 1,932 |
Forfeited | — |  |  | — |  |  |  |  |
Outstanding at End of Year | 244 |  |  | 18 |  |  | 6.1 | Yrs |  | $ | 2,937 |
Exercisable at End of Year | 244 |  |  | $ | 18 |  |  | 6.1 | Yrs |  | $ | 2,937 |
Schedule Of Non-Vested Stock Option Activity |
| 2012 |  | 2011 |  | 2010
| Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value |  | Shares (000) |  | Wtd. Avg Grant Date Fair Value
Nonvested stock options at Beginning of Year | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |
Granted | 42 |  |  | 8 |  |  | 42 |  |  | 11 |  |  | 48 |  |  | 8 |
Vested | (42 | ) |  | 8 |  |  | (42 | ) |  | 11 |  |  | (48 | ) |  | 8 |
Forfeited | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Nonvested stock options at End of Year | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |  |  | $ | — |

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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 Reference 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
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