Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Revenues	$ 382.5	$ 386.7	$ 1,146.3	$ 979.2
Costs and expenses
Cost of services and products, excluding items below	194.7	197.7	587.9	499.4
Selling, general and administrative, excluding items below	88.0	85.7	261.3	220.2
Depreciation and amortization	75.5	75.5	229.1	177.6
Restructuring and severance related charges	1.3	0.0	6.4	4.9
Transaction and integration cost	0.2	13.3	3.8	18.2
Total operating costs and expenses	359.7	372.2	1,088.5	920.3
Operating income	22.8	14.5	57.8	58.9
Interest expense	35.0	33.7	105.0	96.3
Loss on extinguishment of debt	0.0	0.0	0.0	1.3
Other components of pension and postretirement benefit plans expense	2.8	3.0	8.4	9.5
Other expense (income), net	0.5	(1.2)	(0.4)	(2.4)
Loss before income taxes	(15.5)	(21.0)	(55.2)	(45.8)
Income tax benefit	(1.9)	(3.3)	(9.2)	(6.0)
Net loss	(13.6)	(17.7)	(46.0)	(39.8)
Preferred stock dividends	2.6	2.6	7.8	7.8
Net loss applicable to common shareowners	$ (16.2)	$ (20.3)	$ (53.8)	$ (47.6)
Basic and diluted net loss per common share	$ (0.32)	$ (0.41)	$ (1.07)	$ (1.06)