Non-Insurance Revenues from Contracts with Customers	3 Months Ended
	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Non-Insurance Revenues from Contracts with Customers	Non-Insurance Revenues from Contracts with CustomersThe Company had deferred non-insurance warranty revenue balances of $4.7 billion reported in Deferred non-insurance warranty revenue as of March 31, 2023 and December 31, 2022. For the three months ended March 31, 2023 and 2022, the Company recognized $0.4 billion of revenues that were included in the deferred revenue balance as of January 1, 2023 and 2022. For the three months ended March 31, 2023 and 2022, 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 approximately $1.2 billion of the deferred revenue in the remainder of 2023, $1.1 billion in 2024, $0.9 billion in 2025 and $1.5 billion thereafter.