Quarterly Financial Data and Revision to Previously Reported Quarterly Financial Statements (Unaudited) - Impact of Revisions (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
Mar. 31, 2021 |
Jun. 30, 2021 |
Sep. 30, 2021 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Current assets: | ||||||
| Cash and cash equivalents | $ 3,303,033 | $ 2,365,140 | $ 1,369,816 | $ 1,506,647 | $ 3,300,482 | |
| Short-term investments | 205,000 | 385,000 | 565,000 | 240,000 | ||
| Cash flows from investing activities | ||||||
| Purchases of short-term investments | (205,000) | (385,000) | (770,000) | (1,010,000) | ||
| Proceeds from maturities of short-term investments | 205,000 | 770,000 | ||||
| Net cash used in investing activities | (343,266) | (700,215) | (1,107,971) | (1,004,044) | (975,362) | $ (1,680,192) |
| Net increase (decrease) in cash and cash equivalents | 2,551 | (935,342) | (1,930,666) | $ (1,793,835) | $ 3,047,606 | $ 89,025 |
| Previously Reported | ||||||
| Current assets: | ||||||
| Cash and cash equivalents | 3,508,033 | 2,750,140 | 1,934,816 | |||
| Cash flows from investing activities | ||||||
| Net cash used in investing activities | (138,266) | (315,215) | (542,971) | |||
| Net increase (decrease) in cash and cash equivalents | 207,551 | (550,342) | (1,365,666) | |||
| Adjustments | Short term investments classification | ||||||
| Current assets: | ||||||
| Cash and cash equivalents | (205,000) | (385,000) | (565,000) | |||
| Short-term investments | 205,000 | 385,000 | 565,000 | |||
| Cash flows from investing activities | ||||||
| Purchases of short-term investments | (205,000) | (385,000) | (770,000) | |||
| Proceeds from maturities of short-term investments | 205,000 | |||||
| Net cash used in investing activities | (205,000) | (385,000) | (565,000) | |||
| Net increase (decrease) in cash and cash equivalents | $ (205,000) | $ (385,000) | $ (565,000) | |||
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- References No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash inflow from sales, maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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