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Income Taxes - Change in Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Income Tax Disclosure [Abstract]      
Balance, beginning of period $ 127 $ 132 $ 132
Additions for prior year tax positions 39 1 0
Additions for current year tax positions 5 6 5
Reduction for prior year tax positions (114) 0 0
Impact of currency translations 1 (12) (5)
Balance, end of period $ 58 $ 127 $ 132