Deferred Income Tax (Table) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011 Predecessor [Member]	Dec. 31, 2012 Successor [Member]
Deferred Tax Assets, Gross [Abstract]
Alternative Minimum Tax Credit	$ 38	$ 37
Pension and Other Postretirement Benefits	54	24
Derivative financial instruments (interest rates)	32	31
Long Term Debt	0	78
Net operating loss	25	70
Other	35	34
Deferred Tax Assets, Gross, Noncurrent	184	274
Deferred Tax Liabilities, Gross [Abstract]
Property, Plant and Equipment	(1,139)	(1,423)
Unsolidated Investments	(29)	(280)
Other	(48)	(56)
Deferred Tax Liabilities, Gross, Noncurrent	(1,216)	(1,759)
Deferred Tax Liabilities, Noncurrent	(1,032)	(1,485)
Deferred Tax Assets, Gross, Current	13	105
Accumulated deferred income taxes	$ (1,045)	$ (1,590)