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Long-Term Debt - Additional Information (Detail) $ / shares in Units, € in Millions |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 04, 2020 USD ($) $ / shares shares | Jul. 03, 2017 USD ($) $ / shares shares | Jul. 31, 2021 USD ($) Bond shares | Jul. 31, 2020 USD ($) shares | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2017 | Jun. 01, 2021 EUR (€) | Dec. 31, 2020 EUR (€) | Aug. 01, 2017 EUR (€)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion features of the instruments value | $ 215,000,000 | $ 242,000,000 |  |  |  | $ 184,000,000 |  |  |  |
Allocated debt issuance costs | 1,000,000 | 1,000,000 |  |  |  |  |  |  |  |
Loss on financial instruments, net |  |  |  |  | $ (43,000,000) | (26,000,000) |  |  |  |
Allocated debt deferred tax effect | 30,000,000 |  |  |  |  |  |  |  |  |
Unamortized debt discount and issuance costs totaled |  |  |  |  | 113,000,000 |  |  |  |  |
Medium Term Credit Facilities [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Unutilized committed medium term credit facilities |  |  |  |  | 910,000,000 |  |  |  |  |
Support R&D and Capital Expenditure Programs [Member] | Italy and France [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Increase in long term debt | € |  |  |  |  |  |  |  |  | € 500 | € 500
Amount outstanding |  |  |  |  | 566,000,000 | 424,000,000 |  |  |  |
New Facility Agreement with CDP [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Increase in long term debt | € |  |  |  |  |  |  |  | € 150 |  |
Amount outstanding |  |  |  |  | $ 156,000,000 |  |  |  |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of liability component | 1,362,000,000 | 1,266,000,000 |  |  |  |  |  |  |  |
Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Net proceeds from issuance of senior unsecured convertible bonds | 1,567,000,000 | $ 1,502,000,000 |  |  |  |  |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Senior unsecured convertible bonds conversion premium rate |  | 37.50% |  |  |  |  |  |  |  |
Debt conversion, bond par value |  |  |  | $ 750,000,000 |  |  |  |  |  |
Conversion features of the instruments value |  |  |  | $ 0 |  |  |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] | Treasury Stock [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares |  |  |  | 11,400,000 |  |  |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of liability component |  |  |  | $ 739,000,000 |  |  |  |  |  |
Loss on financial instruments, net |  |  |  |  |  | $ 25,000,000 |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt discount rate |  | 0.0270 |  | 0.008 |  |  |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount |  | $ 750,000,000 |  |  |  |  |  |  |  |
0.25%, due 2024 (Tranche B) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument periodic payment |  |  |  |  | semi-annually |  |  |  |  |
Senior unsecured convertible bonds conversion premium rate |  | 37.50% |  |  |  |  |  |  |  |
0.25%, due 2024 (Tranche B) [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt discount rate |  | 0.0328 |  |  |  |  |  |  |  |
0.25%, due 2024 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount |  | $ 750,000,000 |  |  |  |  |  |  |  |
Long-term debt maturity date |  |  |  |  |  |  | 2024 |  |  |
Interest rate |  | 0.25% |  |  |  |  |  |  |  |
Dual Tranche Senior Unsecured Convertible Bonds | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount | $ 1,500,000,000 | $ 1,500,000,000 |  |  |  |  |  |  |  |
Senior unsecured convertible bonds conversion price | $ / shares |  | $ 20.54 |  |  |  |  |  |  |  |
Zero-coupon, due 2022 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt maturity date |  |  |  |  |  |  | 2022 |  |  |
Zero Coupon Due Two Thousand Nineteen Tranche A | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percentage at which bonds issued |  | 101.265% |  |  |  |  |  |  |  |
Tranche Two |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares |  | 9,737 |  |  |  |  |  |  |  |
Tranche One |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares |  | 9,737 |  |  |  |  |  |  |  |
Debt conversion, bond par value |  | $ 200,000 |  |  |  |  |  |  |  |
0.25% due 2024 (Tranche B) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  | 0.25% |  |  |  |  |  |  |  |
0.25% due 2024 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Long-term debt maturity date |  |  |  |  | 2024 | 2024 |  |  |  |
Interest rate |  |  |  |  | 0.25% | 0.25% |  |  | 0.25% |
Zero Coupon Due Two Thousand And Twenty Four Tranche B |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt conversion, bond par value |  |  | $ 248,000,000 |  |  |  |  |  |  |
Conversion features of the instruments value |  |  | $ 0 |  |  |  |  |  |  |
Number of bonds settled | Bond |  |  | 3,750 |  |  |  |  |  |  |
Number of bonds settled on net-share basis | Bond |  |  | 1,238 |  |  |  |  |  |  |
Total consideration of bonds on net-share basis |  |  | $ 479,000,000 |  |  |  |  |  |  |
Number of bonds settled on full cash basis | Bond |  |  | 2,512 |  |  |  |  |  |  |
Total consideration of bonds on full cash basis |  |  | $ 1,015,000,000 |  |  |  |  |  |  |
Write-off of unamortized debt issuance costs |  |  |  |  | $ 1,000,000 |  |  |  |  |
Zero Coupon Due Two Thousand And Twenty Four Tranche B | Treasury Stock [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares |  |  | 5,800,000 |  |  |  |  |  |  |
Zero Coupon Due Two Thousand And Twenty Four Tranche B | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of liability component |  |  | $ 689,000,000 |  |  |  |  |  |  |
Loss on financial instruments, net |  |  |  |  | $ 44,000,000 |  |  |  |  |
Zero Coupon Due Two Thousand And Twenty Four Tranche B | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt discount rate |  |  | 0.011 |  |  |  |  |  |  |
Zero-coupon, due 2025 (Tranche A) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Senior unsecured convertible bonds conversion premium rate | 47.50% |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares | 4,585 |  |  |  |  |  |  |  |  |
Debt conversion, bond par value | $ 200,000 |  |  |  |  |  |  |  |  |
Zero-coupon, due 2025 (Tranche A) [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt discount rate | 0.0130 |  |  |  |  |  |  |  |  |
Zero-coupon, due 2025 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount | $ 750,000,000 |  |  |  |  |  |  |  |  |
Long-term debt maturity date |  |  |  |  | 2025 | 2025 |  |  |  |
Percentage at which bonds issued | 105.80% |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 0.00% | 0.00% |  |  | 0.00% |
Senior unsecured convertible bonds conversion price | $ / shares | $ 43.62 |  |  |  |  |  |  |  |  |
Zero-coupon, due 2027 (Tranche B) [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Senior unsecured convertible bonds conversion price | $ / shares | $ 45.10 |  |  |  |  |  |  |  |  |
Senior unsecured convertible bonds conversion premium rate | 52.50% |  |  |  |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued | shares | 4,435 |  |  |  |  |  |  |  |  |
Debt conversion, bond par value | $ 200,000 |  |  |  |  |  |  |  |  |
Zero-coupon, due 2027 (Tranche B) [Member] | Measurement Input, Discount Rate [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt discount rate | 0.0185 |  |  |  |  |  |  |  |  |
Zero-coupon, due 2027 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt instrument principal amount | $ 750,000,000 |  |  |  |  |  |  |  |  |
Long-term debt maturity date |  |  |  |  | 2027 | 2027 |  |  |  |
Percentage at which bonds issued | 104.50% |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  | 0.00% | 0.00% |  |  | 0.00% |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1D -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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- Definition The cash inflow from the issuance of long-term debt that is not secured by collateral. Excludes proceeds from tax exempt unsecured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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