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v3.21.1

Supplemental Financial Statement Information - Additional Information (Details) - USD ($) |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Apr. 03, 2020 | Mar. 31, 2020 | Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Effects of Reinsurance |  |  |  |  |
Cash and cash equivalents and short-term investments |  |  | $ 2,200,000,000 |  | $ 2,300,000,000
Restricted cash and cash equivalents and restricted short-term investments |  |  | 1,100,000,000 |  | 1,200,000,000
Allowance for credit loss on marketable and non-marketable available for sale debt securities |  |  | 0 |  |
Transfer of certain legacy auto insurance liabilities |  |  | 0 | $ 407,885,000 |
Loss recognized from net cost of novation agreement |  |  |  | 64,700,000 |
Cash and Cash Equivalents and Short-Term Investments |  |  |  |  |
Effects of Reinsurance |  |  |  |  |
Cash |  |  | 44,200,000 |  | 133,600,000
Restricted Cash and Cash Equivalents and Restricted Investments |  |  |  |  |
Effects of Reinsurance |  |  |  |  |
Restricted cash |  |  | $ 57,000,000.0 |  | $ 53,800,000
Cost of revenue |  |  |  |  |
Effects of Reinsurance |  |  |  |  |
Loss recognized from net cost of novation agreement |  |  |  | 62,500,000 |
General and administrative |  |  |  |  |
Effects of Reinsurance |  |  |  |  |
Loss recognized from net cost of novation agreement |  |  |  | 2,200,000 |
Clarendon National Insurance Company | Pacific Valley Insurance Company, Inc. |  |  |  |  |
Effects of Reinsurance |  |  |  |  |
Transfer of reinsurance obligations | $ 465,000,000.0 | $ 465,000,000.0 |  |  |
Reinsurance obligations |  | $ 816,000,000.0 |  | $ 816,000,000.0 |

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