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Leases - Lease Liability Maturities (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
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Lessee, Operating Lease, Liability, Payment, Due [Abstract] |  |
Operating lease liability | $ 637 | $ 647

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- 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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