Restructuring Charges (Tables)

12 Months Ended

Dec. 31, 2018

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs

A summary of activity in the restructuring and severance liability is shown below

(dollars in millions)	Employee Separation			Lease Abandonment			Other			Total
Balance as of December 31, 2015	$	0.2		$	0.8		$	0.1		$	1.1
Charges/(Reversals)	12.5			(0.5		)	(0.1		)	11.9
Utilizations	(1.7		)	(0.1		)	—			(1.8		)
Balance as of December 31, 2016	11.0			0.2			—			11.2
Charges	32.7			—			—			32.7
Utilizations	(29.3		)	(0.1		)	—			(29.4		)
Balance as of December 31, 2017	14.4			0.1			—			14.5
Charges	7.5			0.8			—			8.3
Hawaiian Telcom opening balance sheet adjustment	3.8			—			—			3.8
Utilizations	(16.2		)	(0.2		)	—			(16.4		)
Balance as of December 31, 2018	$	9.5		$	0.7		—			$	10.2

Schedule of Restructuring and Related Costs by Segment [Table Text Block]

A summary of restructuring activity by business segment is presented below:

(dollars in millions)	Entertainment and Communications			IT Services and Hardware			Corporate			Total
Balance as of December 31, 2015	$	0.8		$	0.3		$	—		$	1.1
Charges	7.7			3.3			0.9			11.9
Utilizations	(1.0		)	(0.6		)	(0.2		)	(1.8		)
Balance as of December 31, 2016	7.5			3.0			0.7			11.2
Charges	27.6			5.1			—			32.7
Utilizations	(22.8		)	(5.9		)	(0.7		)	(29.4		)
Balance as of December 31, 2017	12.3			2.2			—			14.5
Charges	3.1			4.9			0.3			8.3
Hawaiian Telcom opening balance sheet adjustment	3.8			—			—			3.8
Utilizations	(10.6		)	(5.8		)	—			(16.4		)
Balance as of December 31, 2018	$	8.6		$	1.3		$	0.3		10.2