Contract Liabilities and Remaining Performance Obligations (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

The following table represents the total transaction price for the remaining performance obligations as of June 30, 2018 related to non-cancelable contracts longer than 12 months in duration that is expected to be recognized over future periods.

(in millions)	Within 1 Year		Years 1-2		Years 2-3		Thereafter
Remaining performance obligations	$	33.6	$	20.8	$	6.2	$	0.9