CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2017	Dec. 30, 2016	Dec. 25, 2015	Dec. 26, 2014
Current Assets:
Cash and Cash Equivalents (Note 1)	$ 401	$ 603	$ 628	$ 669
Short-term Investments	18	417
Accounts Receivable - Net (Note 1)	970	938
Materials and Supplies	372	407
Other Current Assets	154	122
Total Current Assets	1,915	2,487
Properties	44,324	43,227
Accumulated Depreciation	(12,560)	(12,077)
Properties - Net	31,764	31,150
Other Long-term Assets	374	318
Total Assets	35,739	35,414
Current Liabilities:
Accounts Payable	847	806
Labor and Fringe Benefits Payable	602	545
Casualty, Environmental and Other Reserves	108	115
Current Maturities of Long-term Debt	19	331
Income and Other Taxes Payable	157	129
Other Current Liabilities	161	114
Total Current Liabilities	1,894	2,040
Noncurrent Liabilities
Casualty, Environmental and Other Reserves	266	259
Long-term Debt (Note 9)	11,790	10,962
Deferred Income Taxes - Net (Note 11)	6,418	9,596
Other Long-term Liabilities	650	863
Total Liabilities	21,018	23,720
Shareholders' Equity:
Common Stock, $1 Par Value (Note 3)	890	928
Other Capital	217	138
Retained Earnings (Note 1)	14,084	11,253
Accumulated Other Comprehensive Loss (Note 14)	(486)	(640)
Noncontrolling Minority Interest	16	15
Total Shareholders' Equity	14,721	11,694	$ 11,668	$ 11,176
Total Liabilities and Shareholders' Equity	35,739	35,414
Investments in Conrail
Current Assets:
Investment in Affiliates, Subsidiaries and Other	907	840
Affiliates and Other Companies
Current Assets:
Investment in Affiliates, Subsidiaries and Other	$ 779	$ 619

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.