Condensed Consolidated Statements Of Financial Position (Current Period Unaudited) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 788	$ 960
Short-term investments (Note 13)	46	46
Accounts receivable, net (Note 10)	2,052	1,722
Materials and supplies	790	621
Other current assets	300	202
Total current assets	3,976	3,551
Investments	2,287	2,241
Properties, net (Note 11)	55,315	54,871
Operating lease assets	1,706	1,787
Other assets	1,156	1,075
Total assets	64,440	63,525
Current liabilities:
Accounts payable and other current liabilities (Note 12)	3,668	3,578
Debt due within one year (Note 14)	2,334	2,166
Total current liabilities	6,002	5,744
Debt due after one year (Note 14)	29,673	27,563
Operating lease liabilities	1,295	1,429
Deferred income taxes	12,777	12,675
Other long-term liabilities	1,983	1,953
Commitments and contingencies (Note 15)
Total liabilities	51,730	49,364
Common shareholders' equity:
Common shares, $2.50 par value, 1,400,000,000 authorized; 1,112,629,114 and1,112,440,400 issued; 625,168,003 and 638,841,656 outstanding, respectively	2,781	2,781
Paid-in-surplus	5,030	4,979
Retained earnings	56,958	55,049
Treasury stock	(51,218)	(47,734)
Accumulated other comprehensive loss (Note 9)	(841)	(914)
Total common shareholders' equity	12,710	14,161
Total liabilities and common shareholders' equity	$ 64,440	$ 63,525