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Leases Other supplemental information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Leases [Abstract] |  |  |  |
Operating cash flows from operating leases | $ 354 |  | $ 332 | $ 307
Operating cash flows from finance leases | 41 |  | 38 | 38
Financing cash flows from finance leases | 37 |  | 26 | 24
Right-of-Use Assets Obtained in Exchange for Operating Lease Liability | 487 | [1] | 249 | 433
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | $ 64 |  | $ 62 | $ 6
Operating Lease, Weighted Average Remaining Lease Term | 8 years 2 months 12 days |  | 9 years 6 months | 9 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent | 5.30% |  | 5.20% | 4.90%
Finance Lease, Weighted Average Remaining Lease Term | 5 years 3 months 18 days |  | 5 years 10 months 24 days | 6 years 3 months 18 days
[1] |

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- Definition Amount of interest paid on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-5 + Details
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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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