STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2016

Stock-Based Compensation Cost and Associated Tax Benefit

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2016		2015		2016		2015
Stock-based compensation cost	$	23.5	$	21.7	$	48.9	$	44.4
Tax benefit	$	7.5	$	6.7	$	15.9	$	14.6

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	$22.95

Stock Option Exercises and Restricted Stock Vesting

	Six Months Ended
	June 30,
Exercise of stock options:	2016		2015
Proceeds from stock option exercises	$	33.4	$	51.9
Aggregate intrinsic value	$	21.0	$	49.9
Tax benefit realized upon exercise	$	7.4	$	17.9
Number of shares exercised		0.6		1.0
	Six Months Ended
	June 30,
Vesting of restricted stock:	2016		2015
Fair value of shares vested	$	90.6	$	110.8
Tax benefit realized upon vesting	$	29.6	$	35.6
Number of shares vested		1.0		1.1
	Six Months Ended
	June 30,
Vesting of performance-based restricted stock:	2016		2015
Fair value of shares vested	$	23.6	$	43.1
Tax benefit realized upon vesting	$	8.4	$	15.6
Number of shares vested		0.2		0.5