CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 30, 2016
Current Assets:
Cash and Cash Equivalents	$ 1,320	$ 401	$ 620	$ 603
Short-term Investments	83	18
Accounts Receivable - Net (Note 11)	1,036	970
Materials and Supplies	326	372
Other Current Assets	116	154
Total Current Assets	2,881	1,915
Properties	44,306	44,324
Accumulated Depreciation	(12,459)	(12,560)
Properties - Net	31,847	31,764
Other Long-term Assets	455	374
Total Assets	36,924	35,739
Current Liabilities:
Accounts Payable	852	847
Labor and Fringe Benefits Payable	486	602
Casualty, Environmental and Other Reserves (Note 4)	114	108
Current Maturities of Long-term Debt (Note 7)	19	19
Income and Other Taxes Payable	123	157
Other Current Liabilities	138	161
Total Current Liabilities	1,732	1,894
Casualty, Environmental and Other Reserves (Note 4)	232	266
Long-term Debt (Note 7)	13,769	11,790
Deferred Income Taxes - Net	6,532	6,418
Other Long-term Liabilities	636	650
Total Liabilities	22,901	21,018
Shareholders' Equity:
Common Stock, $1 Par Value	859	890
Other Capital	127	217
Retained Earnings	13,604	14,084
Accumulated Other Comprehensive Loss (Note 10)	(581)	(486)
Noncontrolling Interest	14	16
Total Shareholders' Equity	14,023	14,721
Total Liabilities and Shareholders' Equity	36,924	35,739
Investments in Conrail
Current Assets:
Investment in Affiliates and Other Companies	931	907
Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Other Companies	$ 810	$ 779