Finance Receivables - Recorded Investment in Retail Finance Receivables, by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Dec. 31, 2020	Sep. 27, 2020
Financing Receivable, Allowance for Credit Losses
Total	$ 7,219,092	$ 6,833,944	$ 7,252,194
Retail
Financing Receivable, Allowance for Credit Losses
2021	2,621,357
2020	1,721,526	2,467,348	2,180,551
2019	1,156,272	1,730,885	1,922,675
2018	674,434	1,082,250	1,218,740
2017	338,205	591,597	680,965
2016 & Prior	216,162	309,427	370,987
2015 & Prior		162,688	211,380
Total	6,727,956	6,344,195	6,585,298
Retail | UNITED STATES
Financing Receivable, Allowance for Credit Losses
2021	2,552,736
2020	1,668,590	2,392,143	2,111,734
2019	1,113,069	1,665,438	1,853,425
2018	649,617	1,041,840	1,175,053
2017	327,008	569,957	656,496
2016 & Prior	211,099	300,604	360,221
2015 & Prior		158,287	205,689
Total	6,522,119	6,128,269	6,362,618
Retail | CANADA
Financing Receivable, Allowance for Credit Losses
2021	68,621
2020	52,936	75,205	68,817
2019	43,203	65,447	69,250
2018	24,817	40,410	43,687
2017	11,197	21,640	24,469
2016 & Prior	5,063	8,823	10,766
2015 & Prior		4,401	5,691
Total	205,837	215,926	222,680
Retail | Super prime | UNITED STATES
Financing Receivable, Allowance for Credit Losses
2021	896,163
2020	551,078	822,631	730,539
2019	367,490	575,977	649,174
2018	206,333	355,529	408,201
2017	83,674	165,436	196,050
2016 & Prior	38,494	71,360	90,179
2015 & Prior		29,181	39,749
Total	2,143,232	2,020,114	2,113,892
Retail | Super prime | CANADA
Financing Receivable, Allowance for Credit Losses
2021	50,110
2020	36,596	53,465	48,974
2019	31,173	48,692	51,939
2018	16,701	28,581	31,351
2017	6,265	13,818	16,013
2016 & Prior	2,239	5,018	6,526
2015 & Prior		2,011	2,723
Total	143,084	151,585	157,526
Retail | Prime | UNITED STATES
Financing Receivable, Allowance for Credit Losses
2021	1,228,335
2020	805,349	1,133,637	993,429
2019	538,440	794,058	877,714
2018	323,554	508,713	570,851
2017	171,308	293,358	336,134
2016 & Prior	107,715	156,688	187,067
2015 & Prior		77,046	101,403
Total	3,174,701	2,963,500	3,066,598
Retail | Prime | CANADA
Financing Receivable, Allowance for Credit Losses
2021	16,166
2020	13,904	18,568	17,053
2019	10,336	14,257	14,681
2018	7,026	10,269	10,630
2017	4,228	6,727	7,285
2016 & Prior	2,350	3,198	3,555
2015 & Prior		2,025	2,489
Total	54,010	55,044	55,693
Retail | Sub-prime | UNITED STATES
Financing Receivable, Allowance for Credit Losses
2021	428,238
2020	312,163	435,875	387,766
2019	207,139	295,403	326,537
2018	119,730	177,598	196,001
2017	72,026	111,163	124,312
2016 & Prior	64,890	72,556	82,975
2015 & Prior		52,060	64,537
Total	1,204,186	1,144,655	1,182,128
Retail | Sub-prime | CANADA
Financing Receivable, Allowance for Credit Losses
2021	2,345
2020	2,436	3,172	2,790
2019	1,694	2,498	2,630
2018	1,090	1,560	1,706
2017	704	1,095	1,171
2016 & Prior	474	607	685
2015 & Prior		365	479
Total	$ 8,743	$ 9,297	$ 9,461