Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Revenues	$ 384.2	$ 296.8	$ 763.8	$ 592.5
Costs and expenses
Cost of services and products, excluding items below	195.5	152.3	393.2	301.7
Selling, general and administrative, excluding items below	87.2	66.1	173.3	134.5
Depreciation and amortization	74.2	50.9	153.6	102.1
Restructuring and severance related charges	1.8	4.6	5.1	4.9
Transaction and integration cost	0.6	2.7	3.6	4.9
Total operating costs and expenses	359.3	276.6	728.8	548.1
Operating income	24.9	20.2	35.0	44.4
Interest expense	34.9	31.8	70.0	62.6
Loss on extinguishment of debt	0.0	1.3	0.0	1.3
Other components of pension and postretirement benefit plans expense	3.0	3.2	5.6	6.5
Other expense (income), net	0.1	(0.8)	(0.9)	(1.2)
Loss before income taxes	(13.1)	(15.3)	(39.7)	(24.8)
Income tax benefit	(7.6)	(1.5)	(7.3)	(2.7)
Net loss	(5.5)	(13.8)	(32.4)	(22.1)
Preferred stock dividends	2.6	2.6	5.2	5.2
Net loss applicable to common shareowners	$ (8.1)	$ (16.4)	$ (37.6)	$ (27.3)
Basic and diluted net loss per common share	$ (0.16)	$ (0.39)	$ (0.75)	$ (0.64)