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Asset Impairment - Additional Information (Detail) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) ReportingUnit | Sep. 30, 2020 USD ($)
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items] |  |
Number of reporting units | ReportingUnit | 5 |
Goodwill impairment loss | $ 230,000,000 | $ 230,000,000
Goodwill impairment tax benefit | 0 |
Impairments of long-lived assets other than goodwill | 90,000,000 |
Tax benefit related to long-lived assets impairments | $ 4,000,000 |
Remaining long lived assets impairment of property plant and equipment |  | 101,000,000
Remaining long lived assets impairment of operating lease right of use assets |  | $ 45,000,000
Measurement Input Discount Rate [Member] | Minimum [Member] |  |
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items] |  |
Reporting unit measurement input | 11.50% |
Measurement Input Discount Rate [Member] | Maximum [Member] |  |
Impaired Assets To Be Disposed Of By Method Other Than Sale [Line Items] |  |
Reporting unit measurement input | 12.80% |

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- Definition Impairment of intangible assets other than goodwill and other long lived assets. + References No definition available. + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266 + Details
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