Stock-Based Compensation	6 Months Ended
Stock-Based Compensation	Jun. 30, 2013
Stock-Based Compensation [Abstract]
Stock-Based Compensation	Stock-Based Compensation. We recognized $1.7 million and $1.8 million in pre-tax compensation expense related to stock options and restricted stock units during the three months ended June 30, 2013 and 2012, respectively, and $3.8 million and $4.8 million, during the six months ended June 30, 2013 and 2012, respectively. During the six months ended June 30, 2013, we granted approximately 513,000 stock options, 155,000 performance-based restricted stock units and 85,000 time-vesting restricted stock units. The stock options granted were valued using a Black-Scholes pricing model with the following assumptions: an expected volatility of 31.25% to 44.35%, a risk-free interest rate of 0.27% to 1.19%, an expected dividend yield of 2.3% to 2.4% and an expected life of 2.33 to 6.25 years. The weighted-average exercise price of the options granted during the six months ended June 30, 2013, was $35.19 and the weighted-average grant-date fair value was $9.11. The restricted stock units are valued using the last trade before the day of the grant, adjusted for any provisions affecting fair value, such as the lack of dividends or dividend equivalents during the vesting period. The weighted-average grant date fair value of the restricted stock units granted during the six months ended June 30, 2013, was $32.45.

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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