CONSOLIDATED BALANCE SHEETS (USD $) In Millions, unless otherwise specified	Mar. 30, 2012	Dec. 30, 2011	Apr. 01, 2011	Dec. 31, 2010
Current Assets
Cash and Cash Equivalents	$ 627	$ 783	$ 534	$ 1,292
Short-term Investments	139	523
Accounts Receivable - Net (Note 1)	1,161	1,129
Materials and Supplies	251	240
Deferred Income Taxes	178	182
Other Current Assets	112	78
Total Current Assets	2,468	2,935
Properties	34,002	33,704
Accumulated Depreciation	(8,861)	(8,730)
Properties - Net	25,141	24,974
Other Long-term Assets	399	393
Total Assets	29,186	29,473
Current Liabilities
Accounts Payable	1,205	1,147
Labor and Fringe Benefits Payable	392	541
Casualty, Environmental and Other Reserves (Note 4)	168	167
Current Maturities of Long-term Debt (Note 7)	502	507
Income and Other Taxes Payable	134	129
Other Current Liabilities	192	196
Total Current Liabilities	2,593	2,687
Casualty, Environmental and Other Reserves (Note 4)	337	352
Long-term Debt (Note 7)	8,623	8,734
Deferred Income Taxes	7,799	7,601
Other Long-term Liabilities	1,330	1,631
Total Liabilities	20,682	21,005
Common Stock $1 Par Value	1,039	1,049
Other Capital	5	6
Retained Earnings	8,313	8,275
Accumulated Other Comprehensive Loss (Note 1)	(866)	(875)
Noncontrolling Interest	13	13
Total Shareholders' Equity	8,504	8,468
Total Liabilities and Shareholders' Equity	29,186	29,473
Investments in Conrail
Current Assets
Investment in Affiliates and Joint Ventures	683	678
Affiliates and Other Companies
Current Assets
Investment in Affiliates and Joint Ventures	$ 495	$ 493