Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Measurements, Nonrecurring

The following is a summary of goodwill and asset impairment expense.

	Three Months Ended September 30,				Nine Months Ended September 30,
(in millions)	2018		2017		2018		2017
Goodwill	$	—	$	205.0	$	351.7	$	205.0
Property, plant and equipment and leasehold intangibles, net	2.5		149.9		50.2		152.4
Investment in unconsolidated ventures	—		—		33.4		19.7
Other intangible assets, net	—		13.7		1.7		13.7
Assets held for sale (Note 4)	3.0		—		15.0		—
Goodwill and asset impairment	$	5.5	$	368.6	$	452.0	$	390.8