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, 2016	Jun. 30, 2015	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]
Benefit obligation at beginning of year	$ 200,203	$ 202,893
Benefit obligation of plans not previously reported		6,148
Service cost	5,606	4,285	$ 2,507
Interest cost	6,802	6,655	7,201
Actuarial loss	28,757	16,236
Settlements, curtailments and other contract benefits	(815)	(5,975)
Benefits paid	(9,351)	(8,905)
Foreign currency translation	(1,722)	(21,134)
Benefit obligation at end of year	229,480	200,203	202,893
Fair value of assets at beginning of year	3,764	6,641
Assets related to acquisitions		193
Actual return on plan assets	548	761
Employer contributions	10,277	10,415
Benefits paid	(9,351)	(8,905)
Settlement	(1,388)	(4,799)
Foreign currency translation	(564)	(542)
Fair value of assets at end of year	3,286	3,764	$ 6,641
Funded status	(226,194)	(196,439)
Unrecognized prior service cost	2,261	4,332
Unrecognized net loss	83,248	61,460
Accrued pension cost	(140,685)	(130,647)
Accrued liabilities	(10,178)	(9,777)
Other non-current liabilities	(216,016)	(186,662)
AOCI	$ 85,509	$ 65,792