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Supplemental cash flow information (Detail) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Supplemental Cash Flow Information [Line Items] |  |
Cash paid during the period for income taxes | $ 2,159 | $ 2,962
Non-cash investing and financing activities: |  |
Liabilities assumed in connection with business acquisitions | 19 | 10,815
Insurance and Other [Member] |  |
Supplemental Cash Flow Information [Line Items] |  |
Cash paid during the period for interest | 671 | 725
Railroad, Utilities and Energy [Member] |  |
Supplemental Cash Flow Information [Line Items] |  |
Cash paid during the period for interest | $ 1,797 | $ 1,857

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- Definition Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-23 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-22 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-2 + Details
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