Supplemental Consolidating Data - Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income	$ 232,233	$ 301,829
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	41,504	34,352
Amortization of deferred loan origination costs	18,282	21,858
Amortization of financing origination fees	3,358	3,011
Provision for long-term employee benefits	(13,933)	(16,939)
Employee benefit plan contributions and payments	(1,399)	(1,739)
Stock compensation expense	16,212	23,628
Net change in wholesale finance receivables related to sales	(435,047)	(487,314)
Provision for credit losses	61,010	52,364
Deferred income taxes	5,399	5,648
Other, net	1,769	(21,671)
Changes in current assets and liabilities:
Accounts receivable, net	(47,119)	(77,993)
Finance receivables – accrued interest and other	1,213	2,252
Inventories, net	131,529	123,047
Accounts payable and accrued liabilities	53,233	43,787
Other current assets	35,753	40,557
Total adjustments	(128,236)	(255,152)
Net cash provided by operating activities	103,997	46,677
Cash flows from investing activities:
Capital expenditures	(46,356)	(45,114)
Origination of finance receivables	(907,769)	(917,145)
Collections on finance receivables	841,914	890,852
Other investing activities	(289)	821
Net cash used by investing activities	(112,500)	(70,586)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes	0	693,276
Repayments of medium-term notes	0	(350,000)
Proceeds from securitization debt	0	547,706
Repayments of securitization debt	(234,178)	(310,640)
Borrowings of asset-backed commercial paper	334,561	0
Repayments of asset-backed commercial paper	(46,154)	(62,634)
Net increase (decrease) in unsecured commercial paper	58,794	(270,119)
Net (decrease) increase in deposits	(6,758)	51,822
Dividends paid	(24,385)	(24,123)
Repurchase of common stock	(107,812)	(96,767)
Other financing activities	7	69
Net cash (used) provided by financing activities	(25,925)	178,590
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(7,020)	3,820
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period	1,648,811	1,579,177
Net (decrease) increase in cash, cash equivalents and restricted cash	(41,448)	158,501
Cash, cash equivalents and restricted cash, end of period	1,607,363	1,737,678
Reportable Legal Entities | Non-Financial Services Entities
Cash flows from operating activities:
Net income	192,363	256,385
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	39,288	32,120
Amortization of deferred loan origination costs	0	0
Amortization of financing origination fees	180	177
Provision for long-term employee benefits	(13,933)	(16,939)
Employee benefit plan contributions and payments	(1,399)	(1,739)
Stock compensation expense	15,583	22,494
Net change in wholesale finance receivables related to sales	0	0
Provision for credit losses	0	0
Deferred income taxes	4,799	4,261
Other, net	(1,946)	(18,087)
Changes in current assets and liabilities:
Accounts receivable, net	(311,951)	(426,221)
Finance receivables – accrued interest and other	0	0
Inventories, net	131,529	123,047
Accounts payable and accrued liabilities	42,313	14,610
Other current assets	14,248	25,342
Total adjustments	(81,289)	(240,935)
Net cash provided by operating activities	111,074	15,450
Cash flows from investing activities:
Capital expenditures	(45,922)	(44,894)
Origination of finance receivables	0	0
Collections on finance receivables	0	0
Other investing activities	(1,289)	821
Net cash used by investing activities	(47,211)	(44,073)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes		0
Repayments of medium-term notes		0
Proceeds from securitization debt		0
Repayments of securitization debt	0	0
Borrowings of asset-backed commercial paper	0
Repayments of asset-backed commercial paper	0	0
Net increase (decrease) in unsecured commercial paper	0	0
Net (decrease) increase in deposits	0	0
Dividends paid	(24,385)	(24,123)
Repurchase of common stock	(107,812)	(96,767)
Other financing activities	7	69
Net cash (used) provided by financing activities	(132,190)	(120,821)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(6,836)	3,894
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period	1,127,400	1,021,798
Net (decrease) increase in cash, cash equivalents and restricted cash	(75,163)	(145,550)
Cash, cash equivalents and restricted cash, end of period	1,052,237	876,248
Reportable Legal Entities | Financial Services Entities
Cash flows from operating activities:
Net income	39,763	45,278
Adjustments to reconcile Net income to Net cash provided by operating activities:
Depreciation and amortization	2,216	2,232
Amortization of deferred loan origination costs	18,282	21,858
Amortization of financing origination fees	3,178	2,834
Provision for long-term employee benefits	0	0
Employee benefit plan contributions and payments	0	0
Stock compensation expense	629	1,134
Net change in wholesale finance receivables related to sales	0	0
Provision for credit losses	61,010	52,364
Deferred income taxes	1,201	1,717
Other, net	3,822	(3,418)
Changes in current assets and liabilities:
Accounts receivable, net	0	0
Finance receivables – accrued interest and other	1,213	2,252
Inventories, net	0	0
Accounts payable and accrued liabilities	270,073	379,094
Other current assets	18,092	13,131
Total adjustments	379,716	473,198
Net cash provided by operating activities	419,479	518,476
Cash flows from investing activities:
Capital expenditures	(434)	(220)
Origination of finance receivables	(2,080,020)	(2,100,019)
Collections on finance receivables	1,587,609	1,586,477
Other investing activities	0	0
Net cash used by investing activities	(492,845)	(513,762)
Cash flows from financing activities:
Proceeds from issuance of medium-term notes		693,276
Repayments of medium-term notes		(350,000)
Proceeds from securitization debt		547,706
Repayments of securitization debt	(234,178)	(310,640)
Borrowings of asset-backed commercial paper	334,561
Repayments of asset-backed commercial paper	(46,154)	(62,634)
Net increase (decrease) in unsecured commercial paper	58,794	(270,119)
Net (decrease) increase in deposits	(6,758)	51,822
Dividends paid	0	0
Repurchase of common stock	0	0
Other financing activities	1,000	0
Net cash (used) provided by financing activities	107,265	299,411
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(184)	(74)
Cash, cash equivalents and restricted cash:
Cash, cash equivalents and restricted cash, beginning of period	521,411	557,379
Net (decrease) increase in cash, cash equivalents and restricted cash	33,715	304,051
Cash, cash equivalents and restricted cash, end of period	555,126	861,430
Consolidating Adjustments
Cash flows from operating activities:
Net income	107	166
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	(435,047)	(487,314)
Provision for credit losses	0	0
Deferred income taxes	(601)	(330)
Other, net	(107)	(166)
Changes in current assets and liabilities:
Accounts receivable, net	264,832	348,228
Finance receivables – accrued interest and other	0	0
Inventories, net	0	0
Accounts payable and accrued liabilities	(259,153)	(349,917)
Other current assets	3,413	2,084
Total adjustments	(426,663)	(487,415)
Net cash provided by operating activities	(426,556)	(487,249)
Cash flows from investing activities:
Capital expenditures	0	0
Origination of finance receivables	1,172,251	1,182,874
Collections on finance receivables	(745,695)	(695,625)
Other investing activities	1,000	0
Net cash used by investing activities	427,556	487,249
Cash flows from financing activities:
Proceeds from issuance of medium-term notes		0
Repayments of medium-term notes		0
Proceeds from securitization debt		0
Repayments of securitization debt	0	0
Borrowings of asset-backed commercial paper	0
Repayments of asset-backed commercial paper	0	0
Net increase (decrease) in unsecured commercial paper	0	0
Net (decrease) increase in deposits	0	0
Dividends paid	0	0
Repurchase of common stock	0	0
Other financing activities	(1,000)	0
Net cash (used) provided by financing activities	(1,000)	0
Effect of exchange rate changes on 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
Net (decrease) increase in cash, cash equivalents and restricted cash	0	0
Cash, cash equivalents and restricted cash, end of period	$ 0	$ 0