STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2016

Stock-Based Compensation Cost and Associated Tax Benefit

	Three Months Ended
	March 31,
	2016		2015
Stock-based compensation cost	$	25.4	$	22.7
Tax benefit	$	8.4	$	7.9

Weighted Average Assumptions used in Determining Fair Value for Options Granted

Expected dividend yield	1.83%
Expected stock volatility	32.3%
Risk-free interest rate	1.60%
Expected holding period	6.8 years
Grant date fair value	$22.93

Stock Option Exercises and Restricted Stock Vesting

	Three Months Ended
	March 31,
Exercise of stock options:	2016		2015
Proceeds from stock option exercises	$	22.8	$	33.5
Aggregate intrinsic value	$	11.0	$	32.1
Tax benefit realized upon exercise	$	3.9	$	11.9
Number of shares exercised		0.4		0.7
	Three Months Ended
	March 31,
Vesting of restricted stock:	2016		2015
Fair value of shares vested	$	89.3	$	108.9
Tax benefit realized upon vesting	$	29.5	$	35.9
Number of shares vested		1.0		1.1
	Three Months Ended
	March 31,
Vesting of performance-based restricted stock:	2016		2015
Fair value of shares vested	$	23.6	$	43.1
Tax benefit realized upon vesting	$	8.4	$	16.1
Number of shares vested		0.2		0.5