Supplemental Consolidating Data - Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 695,046	$ 739,214	$ 650,024
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	158,112	151,942	165,185
Amortization of deferred loan origination costs	85,018	94,914	86,115
Amortization of financing origination fees	13,208	15,105	13,810
Provision for long-term employee benefits	(67,624)	(21,891)	8,317
Employee benefit plan contributions and payments	(5,736)	(14,320)	(17,133)
Stock compensation expense	82,901	54,353	42,156
Net change in wholesale finance receivables related to sales	(387,743)	(198,623)	89,001
Provision for credit losses	227,158	145,133	25,049
Deferred income taxes	(30,059)	(15,936)	(7,672)
Other, net	(39,713)	(13,027)	(9,985)
Changes in current assets and liabilities:
Accounts receivable, net	(11,443)	(82,385)	(53,463)
Finance receivables – accrued interest and other	(339)	414	13,316
Inventories, net	21,257	(254,170)	(207,550)
Accounts payable and accrued liabilities	28,570	4,503	173,548
Other current assets	(13,726)	(56,765)	4,983
Total change in current assets and liabilities	59,841	(190,753)	325,677
Net cash provided by operating activities	754,887	548,461	975,701
Cash flows from investing activities:
Capital expenditures	(207,404)	(151,669)	(120,181)
Origination of finance receivables	(3,873,542)	(4,558,834)	(4,243,710)
Collections of finance receivables	3,570,822	3,935,001	3,902,304
Other investing activities	(2,180)	2,491	2,140
Net cash used by investing activities	(512,304)	(773,011)	(459,447)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes	1,446,304	495,785	0
Repayments of medium-term notes	(1,056,680)	(950,000)	(1,400,000)
Proceeds from securitization debt	1,045,547	1,826,891	1,169,910
Repayments of securitization debt	(1,193,526)	(1,442,860)	(1,340,638)
Borrowings of asset-backed commercial paper	42,429	448,255	98,863
Repayments of asset-backed commercial paper	(237,370)	(302,922)	(261,367)
Net increase (decrease) in unsecured commercial paper	107,146	16,003	(260,250)
Net increase in deposits	129,855	26,605	210,112
Dividends paid	(96,310)	(93,180)	(92,426)
Repurchase of common stock	(363,987)	(338,627)	(11,623)
Cash received from business combination	0	114,068	0
Other financing activities	1,946	(1,985)	2,488
Net cash used by financing activities	(174,646)	(201,967)	(1,884,931)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1,697	(19,525)	(15,272)
Net increase (decrease) in cash, cash equivalents and restricted cash	69,634	(446,042)	(1,383,949)
Cash and cash equivalents:
Cash, cash equivalents and restricted cash, beginning of period	1,579,177	2,025,219	3,409,168
Net increase (decrease) in cash, cash equivalents and restricted cash	69,634	(446,042)	(1,383,949)
Cash, cash equivalents and restricted cash, end of period	1,648,811	1,579,177	2,025,219
Reportable Legal Entities
Cash flows from financing activities:
Proceeds from securitization debt		0
Reportable Legal Entities | Non-Financial Services Entities
Cash flows from operating activities:
Net income	712,909	697,100
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	149,187	143,276
Amortization of deferred loan origination costs	0	0
Amortization of financing origination fees	709	700
Provision for long-term employee benefits	(67,624)	(21,891)
Employee benefit plan contributions and payments	(5,736)	(14,320)
Stock compensation expense	79,311	50,954
Net change in wholesale finance receivables related to sales	0	0
Provision for credit losses	0	0
Deferred income taxes	(26,720)	(11,988)
Other, net	(18,480)	(5,745)
Changes in current assets and liabilities:
Accounts receivable, net	(42,312)	(96,826)
Finance receivables – accrued interest and other	0	0
Inventories, net	21,257	(254,170)
Accounts payable and accrued liabilities	(21,957)	(6,840)
Other current assets	(11,283)	(54,516)
Total change in current assets and liabilities	56,352	(271,366)
Net cash provided by operating activities	769,261	425,734
Cash flows from investing activities:
Capital expenditures	(202,325)	(147,272)
Origination of finance receivables	0	0
Collections of finance receivables	0	0
Other investing activities	(4,680)	2,491
Net cash used by investing activities	(207,005)	(144,781)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes	0	0
Repayments of medium-term notes	0	0
Proceeds from securitization debt	0
Repayments of securitization debt	0	0
Borrowings of asset-backed commercial paper	0	0
Repayments of asset-backed commercial paper	0	0
Net increase (decrease) in unsecured commercial paper	0	0
Net increase in deposits	0	0
Dividends paid	(96,310)	(93,180)
Repurchase of common stock	(363,987)	(338,627)
Cash received from business combination		114,068
Other financing activities	1,946	(1,985)
Net cash used by financing activities	(458,351)	(319,724)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1,697	(17,636)
Net increase (decrease) in cash, cash equivalents and restricted cash	105,602	(56,407)
Cash and cash equivalents:
Cash, cash equivalents and restricted cash, beginning of period	1,021,798	1,078,205
Net increase (decrease) in cash, cash equivalents and restricted cash	105,602	(56,407)
Cash, cash equivalents and restricted cash, end of period	1,127,400	1,021,798	1,078,205
Reportable Legal Entities | Financial Services Entities
Cash flows from operating activities:
Net income	181,937	241,712
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	8,925	8,666
Amortization of deferred loan origination costs	85,018	94,914
Amortization of financing origination fees	12,499	14,405
Provision for long-term employee benefits	0	0
Employee benefit plan contributions and payments	0	0
Stock compensation expense	3,590	3,399
Net change in wholesale finance receivables related to sales	0	0
Provision for credit losses	227,158	145,133
Deferred income taxes	(3,663)	(3,925)
Other, net	(21,033)	(6,880)
Changes in current assets and liabilities:
Accounts receivable, net	0	0
Finance receivables – accrued interest and other	(339)	414
Inventories, net	0	0
Accounts payable and accrued liabilities	67,635	27,069
Other current assets	(5,482)	(3,559)
Total change in current assets and liabilities	374,308	279,636
Net cash provided by operating activities	556,245	521,348
Cash flows from investing activities:
Capital expenditures	(5,079)	(4,397)
Origination of finance receivables	(7,284,431)	(7,960,123)
Collections of finance receivables	6,611,092	7,137,669
Other investing activities	0	0
Net cash used by investing activities	(678,418)	(826,851)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes	1,446,304	495,785
Repayments of medium-term notes	(1,056,680)	(950,000)
Proceeds from securitization debt	1,045,547	1,826,891
Repayments of securitization debt	(1,193,526)	(1,442,860)
Borrowings of asset-backed commercial paper	42,429	448,255
Repayments of asset-backed commercial paper	(237,370)	(302,922)
Net increase (decrease) in unsecured commercial paper	107,146	16,003
Net increase in deposits	129,855	26,605
Dividends paid	(200,000)	(200,000)
Repurchase of common stock	0	0
Cash received from business combination		0
Other financing activities	2,500	0
Net cash used by financing activities	86,205	(82,243)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	(1,889)
Net increase (decrease) in cash, cash equivalents and restricted cash	(35,968)	(389,635)
Cash and cash equivalents:
Cash, cash equivalents and restricted cash, beginning of period	557,379	947,014
Net increase (decrease) in cash, cash equivalents and restricted cash	(35,968)	(389,635)
Cash, cash equivalents and restricted cash, end of period	521,411	557,379	947,014
Consolidating Adjustments
Cash flows from operating activities:
Net income	(199,800)	(199,598)
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	0	0
Amortization of deferred loan origination costs	0	0
Amortization of financing origination fees	0	0
Provision for long-term employee benefits	0	0
Employee benefit plan contributions and payments	0	0
Stock compensation expense	0	0
Net change in wholesale finance receivables related to sales	(387,743)	(198,623)
Provision for credit losses	0	0
Deferred income taxes	324	(23)
Other, net	(200)	(402)
Changes in current assets and liabilities:
Accounts receivable, net	30,869	14,441
Finance receivables – accrued interest and other	0	0
Inventories, net	0	0
Accounts payable and accrued liabilities	(17,108)	(15,726)
Other current assets	3,039	1,310
Total change in current assets and liabilities	(370,819)	(199,023)
Net cash provided by operating activities	(570,619)	(398,621)
Cash flows from investing activities:
Capital expenditures	0	0
Origination of finance receivables	3,410,889	3,401,289
Collections of finance receivables	(3,040,270)	(3,202,668)
Other investing activities	2,500	0
Net cash used by investing activities	373,119	198,621
Cash flows from financing activities:
Proceeds from issuance of medium-term notes	0	0
Repayments of medium-term notes	0	0
Proceeds from securitization debt	0	0
Repayments of securitization debt	0	0
Borrowings of asset-backed commercial paper	0	0
Repayments of asset-backed commercial paper	0	0
Net increase (decrease) in unsecured commercial paper	0	0
Net increase in deposits	0	0
Dividends paid	200,000	200,000
Repurchase of common stock	0	0
Cash received from business combination		0
Other financing activities	(2,500)	0
Net cash used by financing activities	197,500	200,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	0	0
Cash and cash equivalents:
Cash, cash equivalents and restricted cash, beginning of period	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, end of period	$ 0	$ 0	$ 0