Accrued Liabilities (Tables)

12 Months Ended

Jun. 30, 2017

Payables And Accruals [Abstract]

Schedule of Accrued Liabilities

	June 30,
	2017		2016
		(in millions)
Accrued compensation and benefits	$	38.5	$	27.9
Accrued property and equipment purchases		81.8		46.7
Network expense accruals		132.1		94.8
Other accrued taxes		20.1		9.1
Accrued professional fees		3.9		2.3
Other accruals		49.0		44.9
Total	$	325.4	$	225.7