Guarantor and Non-Guarantor Subsidiaries Financial Information - Consolidating Statement of Cash Flows (Parenthetical) (Detail)	Jun. 30, 2014	Jun. 30, 2013
5.625% Senior Secured Notes
Condensed Financial Statements Captions [Line Items]
Interest rate	5.625%
6.750% Senior Notes
Condensed Financial Statements Captions [Line Items]
Interest rate	6.75%	6.75%
11.5% Senior Notes due 2018
Condensed Financial Statements Captions [Line Items]
Interest rate	11.50%
6.00% Senior Secured Notes
Condensed Financial Statements Captions [Line Items]
Interest rate	6.00%	6.00%
6.25% Senior Secured Notes
Condensed Financial Statements Captions [Line Items]
Interest rate	6.25%	6.25%
9.5% Senior Secured Notes
Condensed Financial Statements Captions [Line Items]
Interest rate		9.50%