Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Share-Based Compensation

Schedule of valuation assumptions for stock options

	For the Three Months Ended
	March 31,
	2016		2015
Expected life (in years)	5.5		5.5
Risk-free interest rate	1.36	%	1.36	%
Expected volatility	23.40	%	25.19	%
Expected dividend yield	1.80	%	2.04	%

Schedule of stock option activity

		Weighted
		Average		Average	Aggregate
		Exercise		Remaining	Intrinsic
(dollars and options in thousands,	Number of	Price per		Contractual	Value
except per share amounts)	Options	Share		Term (Years)	(in millions)
Outstanding at December 31, 2015	2,651	$	52.93
Granted	329		99.96
Exercised	(215)		40.77
Cancelled	(33)		50.23
Outstanding at March 31,  2016	2,732	$	59.58	6.39	$	129
Exercisable at March 31,  2016	1,969	$	50.30	5.42	$	111

Schedule of additional information pertaining to stock option activity

	Three Months Ended
	March 31,
(dollars in thousands, except per share)	2016		2015
Weighted average grant date fair value of stock options granted (per share)	$	18.73	$	16.04
Total intrinsic value of stock options exercised	$	12,665	$	3,740

Schedule of restricted unit activity

		Weighted
		Average
	Number of	Fair Value
(shares in thousands)	RSUs	per Share
Non-vested at December 31, 2015	439	$	69.96
Granted	142		99.82
Vested	(113)		66.77
Cancelled	(11)		72.77
Non-vested at March 31, 2016	457	$	79.95

Schedule of components of share based compensation expense

	Three Months Ended
	March 31,
(in millions)	2016		2015
Stock options:
Pre-tax compensation  expense	$	2.1	$	1.8
Income tax (benefit)		(0.8)		(0.7)
Stock option expense, net of income taxes		1.3		1.1
RSUs:
Pre-tax compensation  expense		2.9		2.1
Income tax (benefit)		(1.1)		(0.8)
RSUs, net of income taxes		1.8		1.3
Performance shares and other share-based awards:
Pre-tax compensation  expense		1.8		1.2
Income tax (benefit)		(0.6)		(0.4)
Performance shares and other share-based compensation expense, net of income taxes		1.2		0.8
Total share-based  compensation:
Pre-tax compensation  expense		6.8		5.1
Income tax (benefit)		(2.5)		(1.9)
Total share-based compensation  expense, net of income taxes	$	4.3	$	3.2