Finance Receivables, net Finance Receivables, net (Recoveries) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Jan. 01, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance For Credit Losses, Recoveries And Other Adjustments		$ 513,211		$ 1,011,889
Financing Receivable, Allowance For Credit Losses, Recoveries Reclassified To Income		248,284	$ 0	510,306	$ 0
Expected recoveries	$ 3,514,165	264,927		501,583
Core
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance For Credit Losses, Recoveries And Other Adjustments		461,238		901,932
Financing Receivable, Allowance For Credit Losses, Recoveries Reclassified To Income		229,803		471,459
Expected recoveries		231,435		430,473
Insolvency
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance For Credit Losses, Recoveries And Other Adjustments		51,973		109,957
Financing Receivable, Allowance For Credit Losses, Recoveries Reclassified To Income		18,481		38,847
Expected recoveries		$ 33,492		$ 71,110