Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 1,837	$ 1,938
Accounts receivable, net	1,423	1,404
Materials and supplies	934	952
Other current assets	172	137
Total current assets	4,366	4,431
Property and equipment, net of accumulated depreciation of $18,334 and $17,899, respectively	67,303	67,225
Goodwill	14,852	14,852
Operating lease right-of-use assets	1,241	1,233
Other assets	4,894	4,870
Total assets	92,656	92,611
Current liabilities:
Accounts payable and other current liabilities	3,931	4,447
Long-term debt and finance leases due within one year	860	1,562
Total current liabilities	4,791	6,009
Long-term debt and finance leases	21,887	21,890
Deferred income taxes	15,179	15,110
Operating lease liabilities	650	680
Casualty and environmental liabilities	380	385
Pension and retiree health and welfare liability	201	205
Other liabilities	1,092	1,096
Total liabilities	44,180	45,375
Commitments and contingencies (see Note 5)
Equity:
Member’s equity	48,289	47,042
Accumulated other comprehensive income (loss)	187	194
Total equity	48,476	47,236
Total liabilities and equity	$ 92,656	$ 92,611