v2.4.0.8
Accrued Litigation for Both Covered and Non-Covered Litigation (Detail) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Jun. 30, 2013
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2011
Jun. 30, 2013
Settled
Jun. 30, 2012
Settled
Jun. 30, 2013
Unsettled
Jun. 30, 2012
Unsettled
Loss Contingency Accrual [Roll Forward]                
Balance at October 1 $ 5 $ 4,386 $ 4,384 $ 425        
Provision for unsettled matters             3 4,098
Interest accretion on settled matters            1    
Payments to settlement funds         (351) (140) (4,033) [1]    [1]
Balance at June 30 $ 5 $ 4,386 $ 4,384 $ 425        
[1] On December 10, 2012, the Company paid approximately $4.0 billion from the litigation escrow account into a settlement fund established pursuant to the definitive class settlement agreement in the Multidistrict Litigation Proceedings. The settlement with the class plaintiffs is subject to final court approval, which the Company cannot assure will be received, and to the adjudication of any appeals. See further discussion below.