Income Taxes (Tables)

9 Months Ended

Sep. 30, 2015

Income Tax Disclosure [Abstract]

Summary of Income Tax Contingencies

A reconciliation of the beginning and ending liability for unrecognized tax benefits is as follows (in millions):

	Gross Unrecognized Income Tax Benefits
Balance at December 31, 2014	$	0.9
Gross amount of increases in unrecognized tax benefits related to prior periods	1.5
Balance at September 30, 2015	$	2.4