Finance Receivables - Schedule of Financing Receivable Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment
Total	$ 7,689,477	$ 7,880,231
Gross charge-offs for the year ended
Total	291,468	263,915	$ 176,718
United States
Financing Receivable, Recorded Investment
Total	7,500,851
Canada
Financing Receivable, Recorded Investment
Total	188,626
Retail
Financing Receivable, Recorded Investment
Year 1	2,448,913	2,637,198
Year 2	1,780,330	2,043,433
Year 3	1,313,909	1,176,286
Year 4	702,736	526,884
Year 5	273,313	280,805
After year 5	161,905	154,093
Total	6,681,106	6,818,699
Gross charge-offs for the year ended
Year 1	18,563	20,574
Year 2	93,963	103,391
Year 3	91,421	75,078
Year 4	48,433	31,368
Year 5	20,019	18,366
After year 5	17,607	15,138
Total	290,006	263,915	$ 176,718
Retail | United States
Financing Receivable, Recorded Investment
Year 1	2,402,090	2,572,883
Year 2	1,741,316	1,998,720
Year 3	1,288,745	1,150,467
Year 4	689,938	512,436
Year 5	267,460	273,031
After year 5	159,001	150,461
Total	6,548,550	6,657,998
Gross charge-offs for the year ended
Year 1	18,322	20,047
Year 2	92,489	102,387
Year 3	90,023	74,212
Year 4	47,678	30,896
Year 5	19,628	18,088
After year 5	17,143	14,655
Total	285,283	260,285
Retail | Canada
Financing Receivable, Recorded Investment
Year 1	46,823	64,315
Year 2	39,014	44,713
Year 3	25,164	25,819
Year 4	12,798	14,448
Year 5	5,853	7,774
After year 5	2,904	3,632
Total	132,556	160,701
Gross charge-offs for the year ended
Year 1	241	527
Year 2	1,474	1,004
Year 3	1,398	866
Year 4	755	472
Year 5	391	278
After year 5	464	483
Total	4,723	3,630
Retail | Super prime | United States
Financing Receivable, Recorded Investment
Year 1	1,040,491	1,066,321
Year 2	694,941	729,339
Year 3	449,697	376,474
Year 4	206,974	151,004
Year 5	67,668	70,627
After year 5	28,606	27,013
Total	2,488,377	2,420,778
Retail | Super prime | Canada
Financing Receivable, Recorded Investment
Year 1	36,011	48,705
Year 2	29,098	31,733
Year 3	17,468	17,744
Year 4	8,330	9,241
Year 5	3,179	4,521
After year 5	1,096	1,524
Total	95,182	113,468
Retail | Prime | United States
Financing Receivable, Recorded Investment
Year 1	1,042,910	1,173,463
Year 2	821,719	993,417
Year 3	659,000	584,305
Year 4	363,507	259,995
Year 5	141,495	139,011
After year 5	82,771	78,880
Total	3,111,402	3,229,071
Retail | Prime | Canada
Financing Receivable, Recorded Investment
Year 1	9,111	13,764
Year 2	8,687	11,434
Year 3	6,724	7,336
Year 4	4,033	4,390
Year 5	2,212	2,728
After year 5	1,524	1,838
Total	32,291	41,490
Retail | Sub-prime | United States
Financing Receivable, Recorded Investment
Year 1	318,689	333,099
Year 2	224,656	275,964
Year 3	180,048	189,688
Year 4	119,457	101,437
Year 5	58,297	63,393
After year 5	47,624	44,568
Total	948,771	1,008,149
Retail | Sub-prime | Canada
Financing Receivable, Recorded Investment
Year 1	1,701	1,846
Year 2	1,229	1,546
Year 3	972	739
Year 4	435	817
Year 5	462	525
After year 5	284	270
Total	$ 5,083	$ 5,743