Fair Value Measurements - Schedule of Fair Value Information for Financial Assets and Liabilities Carried on Consolidated Balance Sheets (Parenthetical) (Detail)	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.25%		4.25%
4.75% Convertible Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.75%
4.25% Convertible Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.25%
3.90% Promissory Note [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	3.90%
4.55% Promissory Note [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.55%
Estimate of Fair Value Measurement [Member] | 4.75% Convertible Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.75%
Estimate of Fair Value Measurement [Member] | 4.25% Convertible Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.25%	4.25%
Estimate of Fair Value Measurement [Member] | 3.90% Promissory Note [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	3.90%	3.90%
Estimate of Fair Value Measurement [Member] | 3.75% Callable Promissory Note
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	3.75%	3.75%
Estimate of Fair Value Measurement [Member] | 4.55% Promissory Note [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument stated interest rate	4.55%	4.55%