Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 1,984	$ 1,758
Accounts receivable, net	1,555	1,316
Materials and supplies	1,062	864
Other current assets	203	114
Total current assets	4,804	4,052
Property and equipment, net of accumulated depreciation of $16,988 and $14,978, respectively	65,976	65,714
Goodwill	14,852	14,852
Operating lease right-of-use assets	1,413	1,592
Other assets	5,323	5,227
Total assets	92,368	91,437
Current liabilities:
Accounts payable and other current liabilities	4,098	3,896
Long-term debt and finance leases due within one year	833	932
Total current liabilities	4,931	4,828
Long-term debt and finance leases	22,543	22,287
Deferred income taxes	15,094	15,156
Operating lease liabilities	762	1,015
Casualty and environmental liabilities	413	427
Pension and retiree health and welfare liability	282	291
Other liabilities	951	984
Total liabilities	44,976	44,988
Commitments and contingencies (see Note 5)
Equity:
Member’s equity	47,031	46,096
Accumulated other comprehensive income (loss)	361	353
Total equity	47,392	46,449
Total liabilities and equity	$ 92,368	$ 91,437