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Lease Commitments (Narrative) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 | Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease liabilities | $ 4,065 |
Right-of-use assets and lease liabilities, percent recognized from joint venture | 100.00% |
Future undiscounted cash flows for operating leases not yet commenced | $ 872 |
Accounting Standards Update 2016-02 |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
Operating lease liabilities |  | $ 2,000

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- Definition Lessee, Cash Flows for Operating Lease, Lease Not yet Commenced + References No definition available. + Details
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- Definition Right-of-use Assets and Lease Liabilities, Percent Recognized from Joint Venture + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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- Details
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