Consolidated Statements Of Financial Position - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 831	$ 1,273
Short-term investments (Note 14)	60	60
Accounts receivable, net (Note 11)	1,595	1,755
Materials and supplies	751	742
Other current assets	222	333
Total current assets	3,459	4,163
Investments	2,050	1,912
Net properties (Note 12)	53,916	52,679
Operating lease assets (Note 17)	1,812
Other assets	436	393
Total assets	61,673	59,147
Current liabilities:
Accounts payable and other current liabilities (Note 13)	3,094	3,160
Debt due within one year (Note 15)	1,257	1,466
Total current liabilities	4,351	4,626
Debt due after one year (Note 15)	23,943	20,925
Operating lease liabilities (Note 17)	1,471
Deferred income taxes (Note 8)	11,992	11,302
Other long-term liabilities	1,788	1,871
Commitments and contingencies (Note 18)
Total liabilities	43,545	38,724
Common shareholders' equity:
Common shares, $2.50 par value, 1,400,000,000 authorized; 1,112,014,480 and 1,111,739,781 issued; 692,100,651 and 725,056,690 outstanding, respectively	2,780	2,779
Paid-in-surplus	4,523	4,449
Retained earnings	48,605	45,284
Treasury stock	(36,424)	(30,674)
Accumulated other comprehensive loss (Note 10)	(1,356)	(1,415)
Total common shareholders' equity	18,128	20,423
Total liabilities and common shareholders' equity	$ 61,673	$ 59,147