Finance Receivables - Contractual Maturities Of Finance Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
2022	$ 1,526,278
2023	1,243,327
2024	1,394,135
2025	1,490,097
2026	1,085,058
Thereafter	172,405
Total financing receivables	6,911,300	$ 6,833,944	$ 7,572,947	$ 7,411,816	$ 7,157,557
United States
Accounts, Notes, Loans and Financing Receivable [Line Items]
2022	1,468,277
2023	1,200,378
2024	1,347,423
2025	1,439,253
2026	1,075,717
Thereafter	172,405
Total financing receivables	6,703,453
Canada
Accounts, Notes, Loans and Financing Receivable [Line Items]
2022	58,001
2023	42,949
2024	46,712
2025	50,844
2026	9,341
Thereafter	0
Total financing receivables	$ 207,847