v2.4.0.6
Comprehensive Income - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]        
Comprehensive Income, Net of Tax, Including Portion Attributable to Noncontrolling Interest $ 334 $ 3,013 $ 450 $ 8,948