Finance Receivables - Finance Receivables, Net (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Jun. 27, 2021	Dec. 31, 2020	Sep. 27, 2020	Jun. 28, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable
Financing receivable, gross	$ 7,219,092		$ 6,833,944	$ 7,252,194
Allowance for credit losses	(355,834)	$ (358,811)	(390,936)	(408,702)	$ (411,015)	$ (198,581)
Total allowance for credit loss	6,863,258		6,443,008	6,843,492
Retail
Accounts, Notes, Loans and Financing Receivable
Financing receivable, gross	6,727,956		6,344,195	6,585,298
Allowance for credit losses	(342,016)	(342,490)	(371,738)	(390,076)	(389,758)	(188,501)
Wholesale
Accounts, Notes, Loans and Financing Receivable
Financing receivable, gross	491,136		489,749	666,896
Allowance for credit losses	$ (13,818)	$ (16,321)	$ (19,198)	$ (18,626)	$ (21,257)	$ (10,080)