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STOCK-BASED COMPENSATION (Tables)
9 Months Ended
Sep. 30, 2014
Stock-Based Compensation Cost and Associated Tax Benefit
Three Months EndedNine Months Ended
September 30,September 30,
2014201320142013
Stock-based compensation cost$ 19.3$ 16.0$ 59.9$ 49.3
Tax benefit$ 6.2$ 5.9$ 19.0$ 17.9
Weighted Average Assumptions used in Determining Fair Value for Options Granted
Expected dividend yield 1.41%
Expected stock volatility 41.2%
Risk-free interest rate 2.30%
Expected holding period7.2 years
Grant date fair value$ 31.53
Stock Option Exercises and Restricted Stock Vesting
Nine Months Ended
September 30,
Exercise of stock options:20142013
Proceeds from stock option exercises$ 131.5$ 124.4
Aggregate intrinsic value$ 107.7$ 89.0
Tax benefit realized upon exercise$ 38.7$ 32.6
Number of shares exercised 2.8 3.5
Nine Months Ended
September 30,
Vesting of restricted stock:20142013
Fair value of shares vested$ 92.3$ 54.0
Tax benefit realized upon vesting$ 31.6$ 19.2
Number of shares vested 1.2 1.1
Nine Months Ended
September 30,
Vesting of performance-based restricted stock:20142013
Fair value of shares vested$ 38.0$ 25.5
Tax benefit realized upon vesting$ 14.6$ 9.7
Number of shares vested 0.5 0.5