Finance Receivables, net (Rollforward) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
|
| Receivables [Abstract] | ||||||||
| Amortized cost | $ 0 | $ 0 | $ 0 | |||||
| Negative allowance for expected recoveries | 4,717,204 | 4,717,204 | 4,688,024 | |||||
| Balance as of end of period | 4,717,204 | $ 4,562,576 | 4,717,204 | $ 4,562,576 | $ 4,637,094 | 4,688,024 | $ 4,308,334 | $ 4,140,742 |
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||||||
| Balance as of end of period | 4,717,204 | 4,562,576 | 4,717,204 | 4,562,576 | 4,637,094 | 4,688,024 | 4,308,334 | 4,140,742 |
| Initial negative allowance for expected recoveries - acquisitions | 296,571 | 346,505 | 517,421 | 638,207 | ||||
| Foreign currency translation adjustment | (20,234) | 164,042 | (48,309) | 277,128 | ||||
| Financing Receivable, Allowance for Credit Loss, Recovery | (293,151) | (289,597) | (580,742) | (554,715) | ||||
| Changes in estimated recoveries | 96,924 | 33,292 | 140,810 | 61,214 | ||||
| Core | ||||||||
| Receivables [Abstract] | ||||||||
| Balance as of end of period | 4,406,963 | 4,234,269 | 4,406,963 | 4,234,269 | 4,344,825 | 4,383,201 | 3,986,864 | 3,809,723 |
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||||||
| Balance as of end of period | 4,406,963 | 4,234,269 | 4,406,963 | 4,234,269 | 4,344,825 | 4,383,201 | 3,986,864 | 3,809,723 |
| Initial negative allowance for expected recoveries - acquisitions | 267,517 | 319,562 | 470,467 | 593,455 | ||||
| Foreign currency translation adjustment | (20,231) | 154,158 | (46,005) | 262,564 | ||||
| Financing Receivable, Allowance for Credit Loss, Recovery | (262,920) | (251,657) | (518,826) | (483,140) | ||||
| Changes in estimated recoveries | 77,772 | 25,342 | 118,126 | 51,667 | ||||
| Insolvency | ||||||||
| Receivables [Abstract] | ||||||||
| Balance as of end of period | 310,241 | 328,307 | 310,241 | 328,307 | 292,269 | 304,823 | 321,470 | 331,019 |
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||||||||
| Balance as of end of period | 310,241 | 328,307 | 310,241 | 328,307 | $ 292,269 | $ 304,823 | $ 321,470 | $ 331,019 |
| Initial negative allowance for expected recoveries - acquisitions | 29,054 | 26,943 | 46,954 | 44,752 | ||||
| Foreign currency translation adjustment | (3) | 9,884 | (2,304) | 14,564 | ||||
| Financing Receivable, Allowance for Credit Loss, Recovery | (30,231) | (37,940) | (61,916) | (71,575) | ||||
| Changes in estimated recoveries | $ 19,152 | $ 7,950 | $ 22,684 | $ 9,547 | ||||