Finance Receivables, net Finance Receivables, net (Initial Negative Allowance for Recoveries) (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 01, 2020	Mar. 31, 2020
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses at acquisition	$ (125,757,689)	$ (1,569,038)
Writeoffs, net		1,569,038
Expected recoveries		273,237
Initial negative allowance for expected recoveries	$ 3,514,165	273,237
Insolvency
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses at acquisition		(124,872)
Writeoffs, net		124,872
Expected recoveries		39,550
Initial negative allowance for expected recoveries		39,550
Core
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for credit losses at acquisition		(1,444,166)
Writeoffs, net		1,444,166
Expected recoveries		233,687
Initial negative allowance for expected recoveries		$ 233,687