CONSOLIDATED INCOME STATEMENTS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2013	Sep. 28, 2012	Sep. 27, 2013	Sep. 28, 2012
Income Statement
Revenue	$ 2,999	$ 2,894	$ 9,026	$ 8,872
Expense
Labor and Fringe	791	754	2,335	2,268
Materials, Supplies and Other	576	525	1,643	1,617
Fuel	407	397	1,248	1,251
Depreciation	277	268	823	788
Equipment and Other Rents	94	96	285	295
Total Expense	2,145	2,040	6,334	6,219
Operating Income	854	854	2,692	2,653
Interest Expense	(136)	(138)	(423)	(421)
Other Income - Net	5	5	11	14
Earnings Before Income Taxes	723	721	2,280	2,246
Income Tax Expense	(260)	(266)	(823)	(830)
Net Earnings	$ 463	$ 455	$ 1,457	$ 1,416
Per Common Share (Note 2)
Net Earnings Per Share, Basic (in dollars per share)	$ 0.46	$ 0.44	$ 1.43	$ 1.36
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.46	$ 0.44	$ 1.43	$ 1.36
Average Shares Outstanding (in shares)	1,017	1,038	1,021	1,042
Average Shares Outstanding, Assuming Dilution (in shares)	1,018	1,040	1,021	1,044
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.15	$ 0.14	$ 0.44	$ 0.40