Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 2,911	$ 1,938
Accounts receivable, net	1,332	1,404
Materials and supplies	971	952
Other current assets	234	137
Total current assets	5,448	4,431
Property and equipment, net of accumulated depreciation of $18,750 and $17,899, respectively	68,195	67,225
Goodwill	16,428	14,852
Operating lease right-of-use assets	1,188	1,233
Other assets	2,969	4,870
Total assets	94,228	92,611
Current liabilities:
Accounts payable and other current liabilities	3,809	4,447
Long-term debt and finance leases due within one year	1,356	1,562
Total current liabilities	5,165	6,009
Long-term debt and finance leases	22,950	21,890
Deferred income taxes	15,217	15,110
Operating lease liabilities	569	680
Casualty and environmental liabilities	372	385
Pension and retiree health and welfare liability	198	205
Other liabilities	1,124	1,096
Total liabilities	45,595	45,375
Commitments and contingencies (see Note 6)
Equity:
Member’s equity	48,453	47,042
Accumulated other comprehensive income (loss)	180	194
Total equity	48,633	47,236
Total liabilities and equity	$ 94,228	$ 92,611