Consolidated Balance Sheets (Unaudited) (Successor, USD $) In Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Successor
Current assets:
Cash and cash equivalents	$ 1,783	$ 2,087
Accounts receivable, net	1,007	928
Materials and supplies	731	652
Current portion of deferred income taxes	233	317
Other current assets	258	193
Total current assets	4,012	4,177
Property and equipment, net of accumulated depreciation of $806 and $660, respectively	46,563	45,486
Goodwill	14,803	14,803
Intangible assets, net	1,575	1,732
Other assets	2,136	2,449
Total assets	69,089	68,647
Current liabilities:
Accounts payable and other current liabilities	3,163	2,768
Long-term debt due within one year	669	699
Total current liabilities	3,832	3,467
Deferred income taxes	14,635	14,307
Long-term debt	11,847	11,281
Intangible liabilities, net	1,643	1,790
Casualty and environmental liabilities	901	938
Pension and retiree health and welfare liability	480	490
Other liabilities	948	867
Total liabilities	34,286	33,140
Commitments and contingencies (see Notes 2, 6 and 7)
Equity:
Member's equity (see Note 1)	34,777	35,480
Accumulated other comprehensive income	26	27
Total equity	34,803	35,507
Total liabilities and equity	$ 69,089	$ 68,647