Intangible Assets (Tables)

3 Months Ended

Sep. 30, 2016

Intangible Assets [Abstract]

Schedule of Intangible Assets

	Gross Carrying Amount		Accumulated Amortization		Net
	(in millions)
September 30, 2016
Finite-Lived Intangible Assets
Customer relationships	$	1,149.0	$	(247.3)	$	901.7
Trade names		0.2		(0.2)		—
Underlying rights		1.6		(0.3)		1.3
Total		1,150.8		(247.8)		903.0
Indefinite-Lived Intangible Assets
Certifications		3.5		—		3.5
Underlying Rights		14.8		—		14.8
Total	$	1,169.1	$	(247.8)	$	921.3
June 30, 2016
Finite-Lived Intangible Assets
Customer relationships	$	1,143.6	$	(228.8)	$	914.8
Trade names		0.2		(0.2)		—
Underlying rights		1.6		(0.3)		1.3
Total		1,145.4		(229.3)		916.1
Indefinite-Lived Intangible Assets
Certifications		3.5		—		3.5
Underlying Rights		15.3		—		15.3
Total	$	1,164.2	$	(229.3)	$	934.9