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Short And Long-Term Debt First Lien Notes (Details) - Secured Debt [Member] - 7.625% First Lien Notes - USD ($)
$ in Millions
Oct. 23, 2015
Sep. 30, 2015
Debt Instrument [Line Items]    
Interest Rate   7.625%
Subsequent Event [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Repurchase Amount $ 593  
Repayments of Debt $ 638