Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	7 Months Ended	9 Months Ended	1 Months Ended
	Sep. 30, 2010 Successor	Sep. 30, 2011 Successor	Feb. 12, 2010 Predecessor
OPERATING ACTIVITIES
Net income	$ 1,591	$ 2,063	$ 224
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,096	1,350	192
Deferred income taxes	394	1,098	127
Long-term casualty and environmental liabilities, net	(67)	(13)	(2)
Contribution to defined benefit pension plan	(400)	0	0
Other, net	(119)	(183)	(78)
Changes in current assets and liabilities:
Accounts receivable, net	(197)	(181)	(21)
Materials and supplies	45	(60)	3
Other current assets	46	(92)	(123)
Accounts payable and other current liabilities	565	334	(258)
Net cash provided by operating activities	2,954	4,316	64
INVESTING ACTIVITIES
Capital expenditures excluding equipment	(1,301)	(1,852)	(137)
Acquisition of equipment	(385)	(476)	(67)
Partnership investment	(443)	0	0
Other, net	(255)	(194)	68
Net cash used for investing activities	(2,384)	(2,522)	(136)
FINANCING ACTIVITIES
Proceeds from issuance of long-term debt	1,500	1,500	0
Payments on long-term debt	(148)	(557)	(30)
Cash distributions/dividends paid	(750)	(2,750)	(226)
Proceeds from stock options exercised	0	0	21
Excess tax benefits from equity compensation plans	0	0	9
Other, net	(18)	(15)	0
Net cash (used for) provided by financing activities	584	(1,822)	(226)
(Decrease) increase in cash and cash equivalents	1,154	(28)	(298)
Cash and cash equivalents:
Beginning of period	971	2,087	1,269
End of period	2,125	2,059	971
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid, net of amounts capitalized	387	514	97
Income taxes paid, net of refunds	562	(237)	0
Non-cash asset financing	$ 29	$ 1	$ 8