Segments and Related Information - Reconciliation of Segment Assets to Consolidated Total Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Jun. 30, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	$ 3,561,826	$ 3,611,503
Other current assets	2,002,255	2,079,238
Consolidated total assets	3,561,826	3,611,503
Segment assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	2,337,717	2,433,653
Consolidated total assets	2,337,717	2,433,653
Other current assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Other current assets	800,175	796,134
Other non-current assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Other non-current assets	$ 423,934	$ 381,716