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Consolidated Statement Of Comprehensive Income (Loss) (Unaudited) (Parentheticals) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 3 Months Ended 8 Months Ended 9 Months Ended 14 Months Ended
Sep. 30, 2013
Successor [Member]
Sep. 30, 2012
Predecessor [Member]
Aug. 31, 2013
Predecessor [Member]
Sep. 30, 2012
Predecessor [Member]
Aug. 31, 2013
Predecessor [Member]
Realized and unrealized gains from hedging activity, tax (in Dollars) $ 0 $ 0 $ 0 $ 2 $ 0
Unrealized gains from investment, tax (in Dollars) 0 0 0 0 0
Pension and other postretirement benefit plan obligation activity, tax (in Dollars) $ 0 $ 7 $ 462 $ 15 $ 432