Non-Insurance Revenues from Contracts with Customers	9 Months Ended
	Sep. 30, 2023
Revenue from Contract with Customer [Abstract]
Non-Insurance Revenues from Contracts with Customers	Non-Insurance Revenues from Contracts with CustomersThe Company had balances of $4.7 billion reported in Deferred non-insurance warranty revenue as of September 30, 2023 and December 31, 2022. For the three and nine months ended September 30, 2023, the Company recognized $0.2 billion and $0.9 billion of revenues that were included in the deferred revenue balance as of January 1, 2023. For the three and nine months ended September 30, 2022, the Company recognized $0.3 billion and $1.0 billion of revenues that were included in the deferred revenue balance as of January 1, 2022. For the three and nine months ended September 30, 2023, non-insurance warranty revenue recognized from performance obligations related to prior periods due to a change in estimate was not material. The Company expects to recognize $0.4 billion of the deferred revenue in the remainder of 2023, $1.3 billion in 2024, $1.0 billion in 2025 and $2.0 billion thereafter.