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Other Current Assets (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Jun. 30, 2012
Other Current Assets [Abstract]    
Unrealized gains on derivative contracts $ 3,372 $ 3,063
Deferred receivables consideration 894 629
Other current assets 3,665 2,901
Total other current assets $ 7,931 $ 6,593