Supplemental Consolidating Data - Schedule of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net income	$ 105,745	$ 130,797	$ 215,406	$ 232,233	$ 236,542	$ 447,639
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization					82,129	80,376
Amortization of deferred loan origination costs					32,489	36,466
Amortization of financing origination fees					6,630	6,793
Income related to long-term employee benefits					(27,526)	(26,143)
Employee benefit plan contributions and payments					(3,256)	(2,593)
Stock compensation expense					17,407	28,995
Net change in wholesale finance receivables related to sales					(145,174)	(388,030)
Provision for credit losses					103,072	117,040
Deferred income taxes					13,856	146
Other, net					1,592	14,965
Changes in current assets and liabilities:
Accounts receivable, net					(66,851)	(65,927)
Finance receivables – accrued interest and other					4,999	2,759
Inventories, net					142,996	235,539
Accounts payable and accrued liabilities					136,098	64,166
Other current assets					(25,511)	25,451
Total adjustments					272,950	130,003
Net cash provided by operating activities					509,492	577,642
Cash flows from investing activities:
Capital expenditures					(65,560)	(87,835)
Origination of finance receivables					(1,765,951)	(2,095,952)
Collections on finance receivables					1,740,966	1,786,964
Other investing activities					691	(206)
Net cash used by investing activities					(89,854)	(397,029)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes					647,088	495,856
Repayments of medium-term notes					(700,000)	0
Proceeds from securitization debt					497,790	547,618
Repayments of securitization debt					(584,153)	(506,489)
Borrowings of asset-backed commercial paper					155,000	351,429
Repayments of asset-backed commercial paper					(145,379)	(125,654)
Net decrease in unsecured commercial paper					(135,902)	(379,743)
Net increase (decrease) in deposits					(13,073)	56,007
Dividends paid					(44,756)	(47,359)
Repurchase of common stock					(93,140)	(209,675)
Other financing activities					6	8
Net cash (used) provided by financing activities					(416,519)	181,998
Effect of exchange rate changes on cash, cash equivalents and restricted cash					12,375	(10,821)
Net increase in cash, cash equivalents and restricted cash					15,494	351,790
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period		1,740,854		1,648,811	1,740,854	1,648,811
Net (decrease) increase in cash, cash equivalents and restricted cash					15,494	351,790
Cash, cash equivalents and restricted cash, end of period	1,756,348		2,000,601		1,756,348	2,000,601
Reportable Legal Entities | Non-Financial Services Entities
Cash flows from operating activities:
Net income	53,807		162,731		136,346	355,095
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization					77,352	75,768
Amortization of deferred loan origination costs					0	0
Amortization of financing origination fees					364	360
Income related to long-term employee benefits					(27,526)	(26,143)
Employee benefit plan contributions and payments					(3,256)	(2,593)
Stock compensation expense					16,246	27,896
Net change in wholesale finance receivables related to sales					0	0
Provision for credit losses					0	0
Deferred income taxes					11,955	2,145
Other, net					(18,648)	13,339
Changes in current assets and liabilities:
Accounts receivable, net					(282,732)	(233,698)
Finance receivables – accrued interest and other					0	0
Inventories, net					142,996	235,539
Accounts payable and accrued liabilities					95,281	48,395
Other current assets					6,156	9,347
Total adjustments					18,188	150,355
Net cash provided by operating activities					154,534	505,450
Cash flows from investing activities:
Capital expenditures					(65,330)	(87,050)
Origination of finance receivables					0	0
Collections on finance receivables					0	0
Other investing activities					691	(1,206)
Net cash used by investing activities					(64,639)	(88,256)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes					0	0
Repayments of medium-term notes
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 decrease in unsecured commercial paper					0	0
Net increase (decrease) in deposits					0	0
Dividends paid					(44,756)	(47,359)
Repurchase of common stock					(93,140)	(209,675)
Other financing activities					6	8
Net cash (used) provided by financing activities					(137,890)	(257,026)
Effect of exchange rate changes on cash, cash equivalents and restricted cash					9,678	(10,595)
Net increase in cash, cash equivalents and restricted cash					(38,317)	149,573
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period		1,105,663		1,127,400	1,105,663	1,127,400
Net (decrease) increase in cash, cash equivalents and restricted cash					(38,317)	149,573
Cash, cash equivalents and restricted cash, end of period	1,067,346		1,276,973		1,067,346	1,276,973
Reportable Legal Entities | Financial Services Entities
Cash flows from operating activities:
Net income	52,192		52,771		100,243	92,533
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization					4,777	4,608
Amortization of deferred loan origination costs					32,489	36,466
Amortization of financing origination fees					6,266	6,433
Income related to long-term employee benefits					0	0
Employee benefit plan contributions and payments					0	0
Stock compensation expense					1,161	1,099
Net change in wholesale finance receivables related to sales					0	0
Provision for credit losses					103,072	117,040
Deferred income taxes					2,025	(1,445)
Other, net					20,195	1,637
Changes in current assets and liabilities:
Accounts receivable, net					0	0
Finance receivables – accrued interest and other					4,999	2,759
Inventories, net					0	0
Accounts payable and accrued liabilities					230,797	171,199
Other current assets					(10,497)	9,589
Total adjustments					395,284	349,385
Net cash provided by operating activities					495,527	441,918
Cash flows from investing activities:
Capital expenditures					(230)	(785)
Origination of finance receivables					(3,203,305)	(4,210,218)
Collections on finance receivables					3,037,751	3,531,504
Other investing activities					0	0
Net cash used by investing activities					(165,784)	(679,499)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes					647,088	495,856
Repayments of medium-term notes					(700,000)
Proceeds from securitization debt					497,790	547,618
Repayments of securitization debt					(584,153)	(506,489)
Borrowings of asset-backed commercial paper					155,000	351,429
Repayments of asset-backed commercial paper					(145,379)	(125,654)
Net decrease in unsecured commercial paper					(135,902)	(379,743)
Net increase (decrease) in deposits					(13,073)	56,007
Dividends paid					0	0
Repurchase of common stock					0	0
Other financing activities					0	1,000
Net cash (used) provided by financing activities					(278,629)	440,024
Effect of exchange rate changes on cash, cash equivalents and restricted cash					2,697	(226)
Net increase in cash, cash equivalents and restricted cash					53,811	202,217
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period		635,191		521,411	635,191	521,411
Net (decrease) increase in cash, cash equivalents and restricted cash					53,811	202,217
Cash, cash equivalents and restricted cash, end of period	689,002		723,628		689,002	723,628
Consolidating Adjustments
Cash flows from operating activities:
Net income	(254)		(96)		(47)	11
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
Income related to 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					(145,174)	(388,030)
Provision for credit losses					0	0
Deferred income taxes					(124)	(554)
Other, net					45	(11)
Changes in current assets and liabilities:
Accounts receivable, net					215,881	167,771
Finance receivables – accrued interest and other					0	0
Inventories, net					0	0
Accounts payable and accrued liabilities					(189,980)	(155,428)
Other current assets					(21,170)	6,515
Total adjustments					(140,522)	(369,737)
Net cash provided by operating activities					(140,569)	(369,726)
Cash flows from investing activities:
Capital expenditures					0	0
Origination of finance receivables					1,437,354	2,114,266
Collections on finance receivables					(1,296,785)	(1,744,540)
Other investing activities					0	1,000
Net cash used by investing activities					140,569	370,726
Cash flows from financing activities:
Proceeds from issuance of medium-term notes					0	0
Repayments of medium-term notes
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 decrease in unsecured commercial paper					0	0
Net increase (decrease) in deposits					0	0
Dividends paid					0	0
Repurchase of common stock					0	0
Other financing activities					0	(1,000)
Net cash (used) provided by financing activities					0	(1,000)
Effect of exchange rate changes on cash, cash equivalents and restricted cash					0	0
Net increase in cash, cash equivalents and restricted cash					0	0
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period		$ 0		$ 0	0	0
Net (decrease) increase in cash, cash equivalents and restricted cash					0	0
Cash, cash equivalents and restricted cash, end of period	$ 0		$ 0		$ 0	$ 0