Leases Supplemental balance sheet information (Details) - USD ($) $ in Millions |
Sep. 30, 2019 |
Dec. 31, 2018 |
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|---|---|---|---|---|---|---|---|
| Property, Plant and Equipment, Gross | $ 18,347 | $ 18,187 | |||||
| Accumulated Depreciation | (6,855) | (6,832) | |||||
| Property, plant and equipment, net | 12,002 | $ 12,442 | |||||
| Operating Lease, Right-of-Use Asset | [1] | $ 175 | |||||
| Operating Lease, Weighted Average Remaining Lease Term | 15 years 7 months 6 days | ||||||
| Finance Lease, Weighted Average Remaining Lease Term | 7 years 2 months 12 days | ||||||
| Operating Lease, Weighted Average Discount Rate, Percent | 5.30% | ||||||
| Finance Lease, Weighted Average Discount Rate, Percent | 8.00% | ||||||
| Property Subject to Finance Lease [Member] | |||||||
| Property, Plant and Equipment, Gross | [2] | $ 212 | |||||
| Accumulated Depreciation | [2] | (104) | |||||
| Property, plant and equipment, net | [2] | $ 108 | |||||
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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Weighted average discount rate for finance lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average discount rate for operating lease calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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