Consolidated Balance Sheets (Unaudited) (Successor, USD $) In Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2010
Successor
Current assets:
Cash and cash equivalents	$ 2,059	$ 2,087
Accounts receivable, net	1,111	928
Materials and supplies	712	652
Current portion of deferred income taxes	263	317
Other current assets	157	193
Total current assets	4,302	4,177
Property and equipment, net of accumulated depreciation of $897 and $660, respectively	47,319	45,486
Goodwill	14,803	14,803
Intangible assets, net	1,496	1,732
Other assets	1,963	2,449
Total assets	69,883	68,647
Current liabilities:
Accounts payable and other current liabilities	3,071	2,768
Long-term debt due within one year	559	699
Total current liabilities	3,630	3,467
Deferred income taxes	15,317	14,307
Long-term debt	12,213	11,281
Intangible liabilities, net	1,569	1,790
Casualty and environmental liabilities	915	938
Pension and retiree health and welfare liability	478	490
Other liabilities	975	867
Total liabilities	35,097	33,140
Commitments and contingencies (see Notes 2, 6 and 7)
Equity:
Member's equity (see Note 1)	34,793	35,480
Accumulated other comprehensive income	(7)	27
Total equity	34,786	35,507
Total liabilities and equity	$ 69,883	$ 68,647