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Share-Based Compensation Plans (Schedule of Weighted-Average Assumptions for Stock Options) (Details)
 12 Months Ended
Dec. 31, 2012
Risk-free rate(1) 0.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate [1]
Expected term(2) 4 years [2]
Expected volatility(3) 38.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate [3]
Expected dividends(4) 5.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate [4]
[1] The risk-free rate was based upon the rate on a zero coupon U.S. Treasury bill, for periods within the contractual life of the option, in effect at the time of grant.
[2] The expected term of the option was based on historical employee exercise behavior, the vesting terms of the respective option and a contractual life of 10 years.
[3] Expected volatility was based on the weekly historical volatility of our stock price, over a period similar to the expected life of the option.
[4] Assumed the then-current cash dividends of $.23 during 2012 per share each quarter on our common stock for options granted during that year.