Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Other intangible assets, which are included in Other assets on the accompanying consolidated balance sheets as of December 31, 2018 and 2017 were as follows:

	December 31, 2018					December 31, 2017
(in millions)	Gross carrying amount		Accumulated amortization			Gross carrying amount		Accumulated amortization
Technology	$	93.4	$	(31.9	)	$	91.4	$	(27.4	)
Customer relationships	35.7		(10.6		)	35.7		(9.1		)
Trademarks	64.6		(21.5		)	64.6		(17.2		)
Total amortizable intangible assets	$	193.7	$	(64.0	)	$	191.7	$	(53.7	)