CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Dec. 30, 2011	Dec. 31, 2010	Dec. 25, 2009	Dec. 26, 2008
Current Assets
Cash and Cash Equivalents (Note 1)	$ 783	$ 1,292	$ 1,029	$ 669
Short-term Investments	523	54
Accounts Receivable - Net (Note 1)	1,129	993
Materials and Supplies	240	218
Deferred Income Taxes	182	192
Other Current Assets	78	106
Total Current Assets	2,935	2,855
Properties	33,704	32,065
Accumulated Depreciation	(8,730)	(8,266)
Properties - Net (Note 6)	24,974	23,799
Other Long-term Assets	393	353
Total Assets	29,473	28,141
Current Liabilities
Accounts Payable	1,147	1,046
Labor and Fringe Benefits Payable	541	520
Casualty, Environmental and Other Reserves (Note 5)	183	176
Current Maturities of Long-term Debt (Note 9)	507	613
Income and Other Taxes Payable	129	85
Other Current Liabilities	180	97
Total Current Liabilities	2,687	2,537
Casualty, Environmental and Other Reserves (Note 5)	458	502
Long-term Debt (Note 9)	8,734	8,051
Deferred Income Taxes (Note 12)	7,601	7,053
Other Long-term Liabilities (Note 11)	1,525	1,298
Total Liabilities	21,005	19,441
Shareholders' Equity:
Common Stock $1 Par Value (Note 3)	1,049	370
Other Capital	6	0
Retained Earnings (Note 1)	8,275	9,087
Accumulated Other Comprehensive Loss (Note 1)	(875)	(771)	(809)
Noncontrolling Interest	13	14
Total Shareholders' Equity	8,468	8,700	8,768	7,985
Total Liabilities and Shareholders' Equity	29,473	28,141
Investments in Conrail
Current Assets
Investment in Affiliates and Joint Ventures	678	673
Affiliates and Other Companies
Current Assets
Investment in Affiliates and Joint Ventures	$ 493	$ 461