Additional Balance Sheet and Cash Flow Information - Reconciliation Of Net Income (Loss) To Net Cash Provided By Operating Activities Of Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 423,635	$ 531,451	$ 521,759
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	232,537	264,863	222,188
Amortization of deferred loan origination costs	76,326	81,315	82,911
Amortization of financing origination fees	9,823	8,367	8,045
Provision for long-term employee benefits	13,344	36,481	29,900
Employee benefit plan contributions and payments	(13,256)	(10,544)	(63,277)
Stock compensation expense	33,733	35,539	32,491
Net change in wholesale finance receivables related to sales	(5,822)	(56,538)	35,172
Provision for credit losses	134,536	106,870	132,444
Deferred income taxes	21,547	(33,981)	50,855
Other, net	298	37,554	8,559
Changes in current assets and liabilities:
Accounts receivable, net	44,902	9,143	(18,149)
Finance receivables – accrued interest and other	(11,119)	773	(1,313)
Inventories, net	(47,576)	(31,059)	(20,584)
Accounts payable and accrued liabilities	(18,462)	196,192	10,128
Derivative financial instruments	1,936	473	1,866
Other	(28,110)	29,022	(27,934)
Total adjustments	444,637	674,470	483,302
Net cash provided by operating activities	868,272	1,205,921	1,005,061
Supplemental Cash Flow Information [Abstract]
Interest	229,678	207,484	204,866
Income taxes	$ 149,828	$ 149,436	$ 300,133