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v3.22.0.1

Long-Term Debt - Long-Term Debt (Parenthetical) (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Jul. 03, 2017
0.73% due 2021, floating interest rate at Libor + 0.525% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2021 | 2021 |
Interest rate | 0.73% | 0.73% |
Description of floating rate basis | Libor + 0.525% | Libor + 0.525% |
Basis spread on floating rate | 0.525% | 0.525% |
0.75% due 2021, floating interest rate at Libor + 0.572% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2021 | 2021 |
Interest rate | 0.75% | 0.75% |
Description of floating rate basis | Libor + 0.572% | Libor + 0.572% |
Basis spread on floating rate | 0.572% | 0.572% |
0.06% due 2031, floating interest rate at Euribor + 0.583% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2031 | 2031 |
Interest rate | 0.06% | 0.06% |
Description of floating rate basis | Euribor + 0.583% | Euribor + 0.583% |
Basis spread on floating rate | 0.583% | 0.583% |
0.06% due 2028, floating interest rate at Euribor + 0.589% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2028 | 2028 |
Interest rate | 0.06% | 0.06% |
Description of floating rate basis | Euribor + 0.589% | Euribor + 0.589% |
Basis spread on floating rate | 0.589% | 0.589% |
0.15% due 2031, floating interest rate at Euribor + 0.660% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2031 | 2031 |
Interest rate | 0.15% | 0.15% |
Description of floating rate basis | Euribor + 0.660% | Euribor + 0.660% |
Basis spread on floating rate | 0.66% | 0.66% |
0.05% due 2029, floating interest rate at Euribor + 0.564% [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2029 | 2029 |
Interest rate | 0.05% | 0.05% |
Description of floating rate basis | Euribor + 0.564% | Euribor + 0.564% |
Basis spread on floating rate | 0.564% | 0.564% |
0.15% due 2027, floating interest rate at Euribor + 0.690% [Member] | Cassa Depositi e Prestiti SpA ("CDP") [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 0.15% | 0.15% |
Description of floating rate basis | Euribor + 0.690% | Euribor + 0.690% |
Basis spread on floating rate | 0.69% | 0.69% |
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% |
Zero-coupon, due 2025 (Tranche A) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2025 | 2025 |
Interest rate | 0.00% | 0.00% |
0.37% (weighted average), due 2021-2028, fixed interest rate [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate | 0.37% | 0.37% |
0.37% (weighted average), due 2021-2028, fixed interest rate [Member] | Minimum [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2021 | 2021 |
0.37% (weighted average), due 2021-2028, fixed interest rate [Member] | Maximum [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2028 | 2028 |
Zero-coupon, due 2027 (Tranche B) [Member] | Senior Unsecured Convertible Bonds [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt maturity date | 2027 | 2027 |
Interest rate | 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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