Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 2,572	$ 1,985
Accounts receivable, net	1,579	1,499
Materials and supplies	759	793
Other current assets	176	257
Total current assets	5,086	4,534
Property and equipment, net of accumulated depreciation of $11,512 and $10,004, respectively	64,002	63,185
Goodwill	14,851	14,851
Operating lease right-of-use assets	2,423	0
Intangible assets, net of accumulated amortization of $306 and $279, respectively	346	373
Other assets	2,325	2,150
Total assets	89,033	85,093
Current liabilities:
Accounts payable and other current liabilities	3,730	3,261
Long-term debt due within one year	1,321	830
Total current liabilities	5,051	4,091
Long-term debt	22,669	22,396
Deferred income taxes	14,239	13,795
Operating lease liabilities	1,678	0
Casualty and environmental liabilities	446	486
Intangible liabilities, net of accumulated amortization of $1,043 and $1,022, respectively	360	381
Pension and retiree health and welfare liability	273	267
Other liabilities	949	1,028
Total liabilities	45,665	42,444
Commitments and contingencies (see Notes 5 and 6)
Equity:
Member’s equity	43,176	42,519
Accumulated other comprehensive income (loss)	192	130
Total equity	43,368	42,649
Total liabilities and equity	$ 89,033	$ 85,093