Stock-Based Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Expense

Stock-based compensation expense was as follows:

IN MILLIONS
	Three Months Ended September 30, 2016		Three Months Ended September 30, 2015		Nine Months Ended September 30, 2016		Nine Months Ended September 30, 2015
Founders	$	—	$	1.4	$	0.3	$	4.0
2013 Grants	—		0.2		0.1		0.6
2014 Grants	0.3		0.7		0.9		2.0
2015 Grants	1.2		2.0		3.1		3.9
2016 Grants	0.8		—		4.1		—
Total	$	2.3	$	4.3	$	8.5	$	10.5