XML 60 R45.htm IDEA: XBRL DOCUMENT v2.4.1.9
Accounts Receivable, Net (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Sep. 30, 2014
Accounts Receivable, Net    
Power receivables $ 1,295us-gaap_AccountsReceivableGrossCurrent $ 1,576us-gaap_AccountsReceivableGrossCurrent
Other receivables 76us-gaap_OtherReceivablesGrossCurrent 101us-gaap_OtherReceivablesGrossCurrent
Allowance for uncollectible accounts (1)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent (1)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts receivable, net $ 1,370us-gaap_AccountsReceivableNetCurrent $ 1,676us-gaap_AccountsReceivableNetCurrent