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Lease Commitments - Lease Assets and Liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets: |  |
Operating lease assets | $ 1,129 | $ 1,411
Finance lease assets | $ 338 | 397
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization |
Total leased assets | $ 1,467 | 1,808
Liabilities: |  |
Operating lease liabilities, current | 420 | 579
Finance lease liabilities, current | $ 34 | 51
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:DebtCurrent |
Operating lease liabilities, non-current | $ 740 | 872
Finance lease liabilities, non-current | $ 301 | 347
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:LongTermDebtNoncurrent |
Total lease liabilities | $ 1,495 | $ 1,849

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + 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=121603541&loc=SL77918627-209977 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance 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 (a) -URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977 + Details
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