Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2015

Share-Based Compensation

Schedule of valuation assumptions for stock options

	For the Nine Months Ended September 30,
	2015		2014
Expected life (in years)	5.5		5.5
Risk-free interest rate	1.36	%	1.63	%
Expected volatility	25.19	%	30.28	%
Expected dividend yield	2.04	%	2.82	%

Schedule of stock option activity

(dollars and options in thousands, except per share amounts)	Number of Options		Weighted Average Exercise Price per Share		Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
Outstanding at December 31, 2014	2,889		$	46.84
Granted	336		82.28
Exercised	(476	)	38.28
Cancelled	(15	)	60.63
Outstanding at September 30, 2015	2,734		52.49		6.13	$	95,205
Exercisable at September 30, 2015	1,837		44.47		4.92	$	78,712

Schedule of additional information pertaining to stock option activity

	Three Months Ended September 30,				Nine Months Ended September 30,
(dollars in thousands, except per share)	2015		2014		2015		2014
Weighted average grant date fair value of stock options granted (per share)	$	—	$	—	$	16.04	$	12.99
Total intrinsic value of stock options exercised	$	10,860	$	6,416	$	22,064	$	21,339

Schedule of restricted share and restricted unit activity

	RSAs				RSUs
			Weighted				Weighted
			Average				Average
(in thousands, except per share	Number of		Fair Value		Number of		Fair Value
amounts)	RSAs		per Share		RSUs		per Share
Non-vested at December 31, 2014	16		$	27.94	434		$	59.61
Granted	—		—		166		82.23
Vested	(14	)	28.75		(142	)	55.96
Cancelled	—		—		(9	)	64.51
Non-vested at September 30, 2015	2		21.42		449		69.01

Schedule of components of share based compensation expense

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
(in millions)	2015			2014			2015			2014
Stock options:
Pre-tax compensation expense	$	1.7		$	1.7		$	5.1		$	5.4
Income tax benefit	(0.6		)	(0.6		)	(1.9		)	(2.0		)
Stock option expense, net of income taxes	1.1			1.1			3.2			3.4
RSUs, RSAs and other share-based compensation:
Pre-tax compensation expense	3.7			3.0			10.6			8.7
Income tax benefit	(1.4		)	(1.1		)	(3.9		)	(3.2		)
RSUs, RSAs and other share-based compensation expense, net of income taxes	2.3			1.9			6.7			5.5
Total share-based compensation:
Pre-tax compensation expense	5.4			4.7			15.7			14.1
Income tax benefit	(2.0		)	(1.7		)	(5.8		)	(5.2		)
Total share-based compensation expense, net of income taxes	$	3.4		$	3.0		$	9.9		$	8.9