Finance Receivables - Recorded Investment Of Retail and Wholesale Finance Receivables By Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Dec. 31, 2020	Sep. 27, 2020
Financing Receivable, Recorded Investment
Total	$ 7,219,092	$ 6,833,944	$ 7,252,194
Wholesale
Financing Receivable, Recorded Investment
2021	432,088
2020	19,082	391,151	509,204
2019	22,821	72,048	120,365
2018	11,218	13,443	18,809
2017	4,222	7,887	8,551
2016 & Prior	1,705	2,297	5,525
2015 & Prior		2,923	4,442
Total	491,136	489,749	666,896
Wholesale | Non-Performing
Financing Receivable, Recorded Investment
2021	0
2020	0	0	0
2019	0	0	0
2018	0	0	0
2017	0	0	0
2016 & Prior	0	0	0
2015 & Prior		0	0
Total	0	0	0
Wholesale | Doubtful
Financing Receivable, Recorded Investment
2021	0
2020	0	0	0
2019	0	0	0
2018	0	0	14
2017	0	0	0
2016 & Prior	0	0	0
2015 & Prior		0	0
Total	0	0	14
Wholesale | Substandard
Financing Receivable, Recorded Investment
2021	0
2020	0	0	277
2019	0	0	238
2018	0	0	0
2017	0	0	0
2016 & Prior	0	0	0
2015 & Prior		0	0
Total	0	0	515
Wholesale | Special Mention
Financing Receivable, Recorded Investment
2021	0
2020	0	658	2,316
2019	0	365	1,213
2018	0	31	160
2017	0	0	0
2016 & Prior	0	0	0
2015 & Prior		0	1,139
Total	0	1,054	4,828
Wholesale | Medium Risk
Financing Receivable, Recorded Investment
2021	0
2020	0	1,925	1,283
2019	0	242	448
2018	0	0	33
2017	0	0	0
2016 & Prior	0	0	0
2015 & Prior		0	0
Total	0	2,167	1,764
Wholesale | Low Risk
Financing Receivable, Recorded Investment
2021	432,088
2020	19,082	388,568	505,328
2019	22,821	71,441	118,466
2018	11,218	13,412	18,602
2017	4,222	7,887	8,551
2016 & Prior	1,705	2,297	5,525
2015 & Prior		2,923	3,303
Total	$ 491,136	$ 486,528	$ 659,775