Other Expense, Net (Tables)

9 Months Ended

Sep. 30, 2018

Other Income and Expenses [Abstract]

Schedule of other expense

	Three Months Ended September 30,					Nine Months Ended September 30,
(in millions)	2018			2017		2018			2017
Restructuring expense	$	5.7		$	13.3	$	44.4		$	13.3
Merger, acquisition and divestiture expense	1.6			6.4		4.8			6.4
Lease termination settlement	—			—		—			5.3
Other (income) expense	(0.2		)	2.3		(6.8		)	2.5
Other expense, net	$	7.1		$	22.0	$	42.4		$	27.5