Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 2,148	$ 1,938
Accounts receivable, net	1,504	1,404
Materials and supplies	1,009	952
Other current assets	116	137
Total current assets	4,777	4,431
Property and equipment, net of accumulated depreciation of $19,464 and $17,899, respectively	70,199	67,225
Goodwill	15,350	14,852
Operating lease right-of-use assets	1,082	1,233
Other assets	3,169	4,870
Total assets	94,577	92,611
Current liabilities:
Accounts payable and other current liabilities	4,340	4,447
Long-term debt and finance leases due within one year	1,265	1,562
Total current liabilities	5,605	6,009
Long-term debt and finance leases	22,217	21,890
Deferred income taxes	15,222	15,110
Operating lease liabilities	554	680
Casualty and environmental liabilities	380	385
Pension and retiree health and welfare liability	196	205
Other liabilities	1,140	1,096
Total liabilities	45,314	45,375
Commitments and contingencies (see Note 14)
Equity:
Member’s equity	49,029	47,042
Accumulated other comprehensive income (loss)	234	194
Total equity	49,263	47,236
Total liabilities and equity	94,577	92,611
Accumulated depreciation; property and equipment	$ 19,464	$ 17,899