Retirement Benefits - Reconciliation of Benefit Obligations, Plan Assets and Funded Status Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Benefit obligation at beginning of year	$ 202,893	$ 183,372
Benefit obligation of plans not previously reported	6,148	5,075
Service cost	4,285	2,507	$ 2,169
Interest cost	6,655	7,201	7,085
Actuarial loss	16,236	11,066
Effects of settlements and curtailments	(5,975)	(2,801)
Plan amendments	0	(613)
Benefits paid	(8,905)	(8,414)
Foreign currency translation	(21,134)	5,500
Benefit obligation at end of year	200,203	202,893	183,372
Fair value of assets at beginning of year	6,641	6,801
Assets related to acquisitions	193	0
Actual return on plan assets	761	114
Employer contributions	10,415	10,018
Benefits paid	(8,905)	(8,414)
Settlement	(4,799)	(2,676)
Foreign currency translation	(542)	798
Fair value of assets at end of year	3,764	6,641	$ 6,801
Funded status	(196,439)	(196,252)
Unrecognized prior service cost	4,332	4,978
Unrecognized net loss	61,460	57,430
Accrued pension cost	(130,647)	(133,844)
Non-current assets	0	0
Accrued liabilities	(9,777)	(9,900)
Other non-current liabilities	(186,662)	(186,352)
AOCI	65,792	62,408
Accrued pension cost	$ (130,647)	$ (133,844)