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Leases - Schedule of Consolidated Balance Sheet Related To Leases (Detail) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Jan. 01, 2019
--- | --- | --- | ---
Assets |  |  |
Operating lease assets, net | $ 530 | $ 615 | $ 664
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:PropertyPlantAndEquipmentNet | us-gaap:PropertyPlantAndEquipmentNet |
Finance lease assets, net | $ 10 | $ 15 |
Total lease assets | $ 540 | $ 630 |
Current |  |  |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:OtherLiabilitiesCurrent | us-gaap:OtherLiabilitiesCurrent |
Operating lease, current liabilities | $ 129 | $ 132 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:DebtCurrent | us-gaap:DebtCurrent |
Finance lease, current liabilities | $ 3 | $ 3 |
Noncurrent |  |  |
Operating lease, noncurrent liabilities | $ 472 | $ 541 |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:LongTermDebtNoncurrent | us-gaap:LongTermDebtNoncurrent |
Finance lease, noncurrent liabilities | $ 5 | $ 10 |
Total lease liabilities | $ 609 | $ 686 |

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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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