Cash Equivalents and Investments (Footnote) (Detail) - Certificates of deposit and money market deposit accounts/funds	Mar. 31, 2024	Dec. 31, 2023
Short-term Investments | Minimum
Cash and Cash Equivalents [Line Items]
Securities maturity period	1 month	1 month
Short-term Investments | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	12 months	12 months
Other assets
Cash and Cash Equivalents [Line Items]
Securities maturity period		14 months
Other assets | Minimum
Cash and Cash Equivalents [Line Items]
Securities maturity period	13 months
Other assets | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	14 months
Cash and Cash Equivalents | Maximum
Cash and Cash Equivalents [Line Items]
Securities maturity period	90 days