Other Expense, Net (Tables)

9 Months Ended

Sep. 30, 2017

Other Income and Expenses [Abstract]

Schedule of other expense

	Three Months Ended September 30,					Nine Months Ended September 30,
(in millions)	2017		2016			2017		2016
Restructuring expense	$	13.3	$	1.3		$	13.3	$	26.9
Merger and acquisition expense	6.4		5.9			6.4		18.9
Lease termination settlement	—		—			5.3		—
Asset impairment expense	—		106.5			—		106.5
Other expense (income)	2.3		(2.6		)	2.5		(4.5		)
Other expense, net	$	22.0	$	111.1		$	27.5	$	147.8