CONSOLIDATED INCOME STATEMENTS (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013
Income Statement
Revenue	$ 3,244	$ 3,046	$ 6,256	$ 6,009
Expense
Labor and Fringe	809	777	1,623	1,544
Materials, Supplies and Other	621	560	1,250	1,067
Fuel	416	397	862	841
Depreciation	287	276	570	546
Equipment and Other Rents	114	96	215	191
Total Expense	2,247	2,106	4,520	4,189
Operating Income	997	940	1,736	1,820
Interest Expense	(135)	(140)	(275)	(287)
Other (Expense) Income - Net	(12)	9	(5)	6
Earnings Before Income Taxes	850	809	1,456	1,539
Income Tax Expense	(321)	(288)	(529)	(556)
Net Earnings	$ 529	$ 521	$ 927	$ 983
Per Common Share
Net Earnings Per Share, Basic (in dollars per share)	$ 0.53	$ 0.51	$ 0.92	$ 0.96
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.53	$ 0.51	$ 0.92	$ 0.96
Average Shares Outstanding (in shares)	1,003	1,022	1,005	1,022
Average Shares Outstanding, Assuming Dilution (in shares)	1,003	1,023	1,006	1,023
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.16	$ 0.15	$ 0.31	$ 0.29