Finite-Lived Intangible Assets (Parenthetical) (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Jun. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 2,756	$ 744	[1]
Software and Software Development Costs
Finite-Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 137	$ 179

[1] Derived from audited financial statements.