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Retrospective Responsibility Plan (Tables)
6 Months Ended
Mar. 31, 2013
Retrospective Responsibility Plan [Abstract]  
Schedule of Restricted Cash and Cash Equivalents
The following table summarizes activity related to the litigation escrow account.
 
(in millions)
Balance at October 1, 2012
$
4,432

Payments to settlement funds(1):
 
Class plaintiffs
(4,033
)
Individual plaintiffs
(350
)
Balance at March 31, 2013
$
49


(1)  
These payments are associated with the Multidistrict Litigation Proceedings. The settlement with the class plaintiffs in these proceedings is subject to final court approval, which the Company cannot assure will be received, and to the adjudication of any appeals. See Note 11—Legal Matters.