Segments and Related Information - Reconciliation of Segment Assets to Consolidated Total Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jun. 30, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	$ 3,764,597	$ 3,611,503
Other current assets	2,164,032	2,079,238
Segment assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Consolidated total assets	2,490,082	2,433,653
Other current assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Other current assets	851,292	796,134
Other non-current assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Other non-current assets	$ 423,223	$ 381,716