Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 2,484	$ 2,148
Accounts receivable, net	1,409	1,504
Materials and supplies	989	1,009
Other current assets	169	116
Total current assets	5,051	4,777
Property and equipment, net of accumulated depreciation of $19,963 and $19,464, respectively	70,266	70,199
Goodwill	15,351	15,350
Operating lease right-of-use assets	1,164	1,082
Other assets	3,221	3,169
Total assets	95,053	94,577
Current liabilities:
Accounts payable and other current liabilities	4,132	4,340
Long-term debt and finance leases due within one year	1,262	1,265
Total current liabilities	5,394	5,605
Long-term debt and finance leases	22,214	22,217
Deferred income taxes	15,266	15,222
Operating lease liabilities	615	554
Casualty and environmental liabilities	374	380
Pension and retiree health and welfare liability	193	196
Other liabilities	1,094	1,140
Total liabilities	45,150	45,314
Commitments and contingencies (see Note 6)
Equity:
Member’s equity	49,672	49,029
Accumulated other comprehensive income (loss)	231	234
Total equity	49,903	49,263
Total liabilities and equity	$ 95,053	$ 94,577