Non-Insurance Revenues from Contracts with Customers	3 Months Ended
	Mar. 31, 2022
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 $4.5 billion reported in Deferred non-insurance warranty revenue as of March 31, 2022 and December 31, 2021. For the three months ended March 31, 2022 and 2021, the Company recognized $0.4 billion and $0.3 billion of revenues that were included in the deferred revenue balance as of January 1, 2022 and 2021. For the three months ended March 31, 2022 and 2021, 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 $1.0 billion of the deferred revenue in the remainder of 2022, $1.1 billion in 2023, $0.9 billion in 2024 and $1.5 billion thereafter.