CONSOLIDATED INCOME STATEMENTS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2012	Sep. 30, 2011	Sep. 28, 2012	Sep. 30, 2011
Income Statement
Revenue	$ 2,894	$ 2,963	$ 8,872	$ 8,792
Expense
Labor and Fringe	754	765	2,268	2,294
Materials, Supplies and Other	525	562	1,617	1,649
Fuel	397	412	1,251	1,245
Depreciation	268	251	788	740
Equipment and Other Rents	96	95	295	287
Total Expense	2,040	2,085	6,219	6,215
Operating Income	854	878	2,653	2,577
Interest Expense	(138)	(138)	(421)	(412)
Other Income - Net (Note 8)	5	6	14	11
Earnings Before Income Taxes	721	746	2,246	2,176
Income Tax Expense	(266)	(282)	(830)	(811)
Net Earnings	$ 455	$ 464	$ 1,416	$ 1,365
Per Common Share (Note 2)
Net Earnings Per Share, Basic (in dollars per share)	$ 0.44	$ 0.43	$ 1.36	$ 1.25
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.44	$ 0.43	$ 1.36	$ 1.24
Average Shares Outstanding (in shares)	1,038	1,071	1,042	1,094
Average Shares Outstanding, Assuming Dilution (in shares)	1,040	1,077	1,044	1,100
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.14	$ 0.12	$ 0.40	$ 0.33