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Financial Instruments - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) Customer | Dec. 31, 2019 USD ($)
Derivative Instruments, Gain (Loss) [Line Items] |  |
Long-term debt due within one year | $ 129 | $ 106
Debt instrument maturity period | 1 year |
Book value of senior notes | $ 3,890 |
Sales Revenue, Net [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of largest customers | Customer | 6 |
Sales Revenue, Net [Member] | Customer Concentration Risk [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Percentage of sales to six largest customers | 78.00% | 77.00%
Fair Value, Inputs, Level 1 [Member] | Senior Notes [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Estimated fair value of notes payable | $ 4,230 |
Foreign Exchange Forward [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Foreign exchange forward contracts, gain recognized in other comprehensive loss | 68 |
Foreign exchange forward contracts, loss recognized in other comprehensive loss | $ 16 |

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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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