CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 1,521			$ 858	$ 663			$ 401
Short-term Investments	1,037			253
Accounts Receivable - Net (Note 9)	1,101			1,010
Materials and Supplies	235			263
Other Current Assets	66			181
Total Current Assets	3,960			2,565
Properties	45,012			44,805
Accumulated Depreciation	(12,934)			(12,807)
Properties - Net	32,078			31,998
Right-of-Use Lease Asset (Note 5)	539			0
Other Long-term Assets	369			387
Total Assets	38,795			36,729
Current Liabilities:
Accounts Payable	1,101			949
Labor and Fringe Benefits Payable	486			550
Casualty, Environmental and Other Reserves (Note 4)	110			113
Current Maturities of Long-term Debt (Note 8)	745			18
Income and Other Taxes Payable	155			106
Other Current Liabilities	208			179
Total Current Liabilities	2,805			1,915
Casualty, Environmental and Other Reserves (Note 4)	195			211
Long-term Debt (Note 8)	15,992			14,739
Deferred Income Taxes - Net	6,882			6,690
Long-term Lease Liability (Note 5)	494			0
Other Long-term Liabilities	548			594
Total Liabilities	26,916			24,149
Shareholders' Equity:
Common Stock, $1 Par Value	782			818
Other Capital	314			249
Retained Earnings	11,416			12,157
Accumulated Other Comprehensive Loss (Note 12)	(648)			(661)
Noncontrolling Interest	15			17
Total Shareholders' Equity	11,879	$ 12,290	$ 12,445	12,580	$ 13,735	$ 14,023	$ 14,391	$ 14,721
Total Liabilities and Shareholders' Equity	38,795			36,729
Investments in Conrail
Current Assets:
Investment in Affiliates and Other Companies	969			943
Affiliates and Other Companies
Current Assets:
Investment in Affiliates and Other Companies	$ 880			$ 836