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Leases - Schedule of Components of Leases (Detail) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Current portion of lease liabilities: |  |
Operating | $ 79 | $ 82
Financing | 23 | 28
Total | 102 | 110
Long-term portion of lease liability: |  |
Operating | 371 | 376
Financing | 222 | 236
Total | $ 593 | $ 612

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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=123391704&loc=SL77918627-209977 + Details
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