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Inventories Table - Inventory Balances (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Dec. 31, 2018
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Inventory, Net [Abstract] |  |
Other Inventory, Supplies, Gross | $ 404 | $ 338
Natural gas, NGLs, and refined products | 900 | 833
Energy Related Inventory, Crude Oil, Products and Merchandise | 510 | 506
Inventory, Net | $ 1,814 | $ 1,677

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- Definition Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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