Finance Receivables, net Finance Receivables, net (Allowance for Expected Recoveries) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance as of beginning of period	$ 4,688,024
Initial negative allowance for expected recoveries - acquisitions	220,850	$ 291,702
Foreign currency translation adjustment	(28,075)	113,086
Recoveries applied to negative allowance	287,591	265,118
Changes in estimated recoveries	43,886	27,922
Balance as of end of period	4,637,094
Balance as of end of period	4,637,094	4,308,334	$ 4,688,024	$ 4,140,742
Core
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Initial negative allowance for expected recoveries - acquisitions	202,950	273,893
Foreign currency translation adjustment	(25,774)	108,406
Recoveries applied to negative allowance	255,906	231,483
Changes in estimated recoveries	40,354	26,325
Balance as of end of period	4,344,825	3,986,864	4,383,201	3,809,723
Insolvency
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Initial negative allowance for expected recoveries - acquisitions	17,900	17,809
Foreign currency translation adjustment	(2,301)	4,680
Recoveries applied to negative allowance	31,685	33,635
Changes in estimated recoveries	3,532	1,597
Balance as of end of period	$ 292,269	$ 321,470	$ 304,823	$ 331,019