Goodwill (Tables)

12 Months Ended

Jun. 30, 2017

Goodwill [Abstract]

Schedule of Goodwill

The following reflects the changes in the carrying amount of goodwill during Fiscal 2017:

Product Group	As of June 30, 2016		Reallocation among reporting units			Adjustments to Fiscal 2016 Acquisitions	Fiscal 2017 Acquisitions			Foreign Currency Translation and Other		As of June 30, 2017
	(in millions)
Dark Fiber	$	295.1	$	(295.1)	$	—		$	—	$	—	$	—
Fiber Solutions		—		544.8		1.7			92.9		(5.5)		633.9
Waves		258.3		(104.0)		(2.7)			96.5		(0.7)		247.4
Sonet		51.3		0.7		—			—		—		52.0
Ethernet		104.3		(59.8)		(0.5)			315.3		0.2		359.5
IP		87.5		(87.5)		—			—		—		—
MIG		73.6		(73.6)		—			—		—		—
EPIC		—		89.5		—			—		—		89.5
zColo		268.8		(15.0)		(3.7)			4.7		1.5		256.3
Cloud		60.0		—		(0.1)			9.4		0.2		69.5
Allstream		—		—		—			116.5		—		116.5
Other		15.6		—		—			—		—		15.6
Total	$	1,214.5	$	—	$	(5.3)		$	635.3	$	(4.3)	$	1,840.2

The following reflects the changes in the carrying amount of goodwill during Fiscal 2016:

Product Group	As of July 1, 2015		Fiscal 2016 Acquisitions			Adjustments to Fiscal 2015 Acquisitions		Foreign Currency Translation and Other		As of July 1, 2016
	(in millions)
Dark Fiber	$	299.1	$	10.2	$	—	$	(14.2)	$	295.1
Waves		265.6		—		—		(7.3)		258.3
Sonet		50.3		1.0		—		-		51.3
Ethernet		104.2		—		—		0.1		104.3
IP		86.3		1.4		—		(0.2)		87.5
MIG		73.4		—		0.2		-		73.6
zColo		273.2		1.3		(5.7)		-		268.8
Cloud		57.0		3.0		—		-		60.0
Other		15.3		—		—		0.3		15.6
Total	$	1,224.4	$	16.9	$	(5.5)	$	(21.3)	$	1,214.5