Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2015

Share-based Compensation [Abstract]

Share-Based Compensation Expense

The expense recognized for the three and six months ended June 30 were as follows:

	Three months ended						Six months ended
In millions	2015			2014			2015			2014
Stock options	$	3.2		$	3.5		$	9.9		$	10.0
RSUs	6.7			4.9			15.7			15.1
Performance shares	4.3			4.8			11.9			14.4
Other	(0.5		)	1.3			0.7			1.3
Pre-tax expense	13.7			14.5			38.2			40.8
Tax benefit	(5.2		)	(5.5		)	(14.6		)	(15.6		)
After-tax expense	$	8.5		$	9.0		$	23.6		$	25.2

Grants of Stock Options and RSUs

Grants issued during the six months ended June 30 were as follows:

	2015			2014
	Number granted	Weighted- average fair value per award		Number granted	Weighted- average fair value per award
Stock options	1,333,849	$	14.15	1,152,138	$	14.29
RSUs	411,968	$	66.82	375,064	$	59.83

Average fair value of stock options, assumptions

The following assumptions were used during the six months ended June 30:

	2015		2014
Dividend yield	1.73	%	1.67	%
Volatility	28.56	%	31.43	%
Risk-free rate of return	1.24	%	1.46	%
Expected life in years	4.9		4.9