CONSOLIDATED INCOME STATEMENTS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 29, 2013	Mar. 30, 2012
Income Statement
Revenue	$ 2,958	$ 2,966
Expense
Labor and Fringe	767	770
Materials, Supplies and Other	507	542
Fuel	444	444
Depreciation	270	257
Equipment and Other Rents	95	97
Total Expense	2,083	2,110
Operating Income	875	856
Interest Expense	(147)	(144)
Other (Expense) Income - Net	(3)	4
Earnings Before Income Taxes	725	716
Income Tax Expense	(266)	(267)
Net Earnings	$ 459	$ 449
Per Common Share (Note 2)
Net Earnings Per Share, Basic (in dollars per share)	$ 0.45	$ 0.43
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.45	$ 0.43
Average Shares Outstanding (in shares)	1,022	1,047
Average Shares Outstanding, Assuming Dilution (in shares)	1,023	1,049
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.14	$ 0.12