Stock Based Compensation Plans

3 Months Ended

Mar. 31, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

6.	Stock Based Compensation Plans

The following table provides a summary of option activity during the three months ended March 31, 2015:

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
				Exercise		Contractual		Intrinsic
	Options			Price		Term		Value
Outstanding at December 31, 2014		8.5		$	45.50
Granted		0.0			0.00
Exercised		(0.4	)		26.88
Cancelled		0.0			0.00
Outstanding at March 31, 2015		8.1		$	46.43		6.0	$	314.2
Exercisable at March 31, 2015		3.9		$	30.46		4.0	$	213.0

The following table provides information regarding the intrinsic value of stock options exercised and stock compensation expense related to stock option awards. The fair value of stock options issued was immaterial in the three months ended March 31, 2015 and March 31, 2014.

	Three Months Ended
	March 31,		March 31,
	2015		2014
Intrinsic Value of Stock Options Exercised	$	23.8	$	16.3
Stock Compensation Expense Related to Stock Option Awards	$	1.7	$	2.1

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References+ Details