Subsequent Events (Details) $ in Thousands, € in Millions	Oct. 30, 2023 USD ($)	Oct. 27, 2023 USD ($)	Oct. 26, 2023	Oct. 16, 2023 USD ($)	Oct. 27, 2023 GBP (£)	Oct. 16, 2023 EUR (€)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 GBP (£)	Sep. 30, 2023 EUR (€)	May 31, 2023	Dec. 31, 2022 USD ($)
Earnings per Basic and Diluted Shares [Line Items]
Senior secured notes							$ 1,480,605				$ 1,485,888
Receivable portfolios							0				0
Subsequent Event
Earnings per Basic and Diluted Shares [Line Items]
Receivable portfolios		$ 286,200
Euro Member Countries, Euro
Earnings per Basic and Diluted Shares [Line Items]
Foreign currency exchange rate, translation										0.94
Credit Facility | Subsequent Event | Secured Overnight Financing Rate (SOFR)
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)			3.50%
Encore 2028 Floating Rate Notes | Secured Debt
Earnings per Basic and Diluted Shares [Line Items]
Senior secured notes							$ 439,200		€ 415.0		$ 445,028
Encore 2028 Floating Rate Notes | Secured Debt | Subsequent Event
Earnings per Basic and Diluted Shares [Line Items]
Senior secured notes				$ 105,800		€ 100.0
Issue price (in percent)				99.01%
Encore 2028 Floating Rate Notes | Secured Debt | Subsequent Event | Base Rate
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)				0.00%
Encore 2028 Floating Rate Notes | Secured Debt | Subsequent Event | EURIBOR
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)				4.25%
Encore 2028 Floating Rate Notes | Secured Debt | Euro Member Countries, Euro
Earnings per Basic and Diluted Shares [Line Items]
Foreign currency exchange rate, translation							0.94	0.94	0.94
U.S. Senior Facility | Credit Facility | Subsequent Event | US Financing Subsidiary | Senior Facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility		$ 175,000
Cabot securitisation senior facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility							$ 408,700	£ 350,000,000
Cabot securitisation senior facility | Credit Facility | Senior Facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility | £								£ 350,000,000
Cabot securitisation senior facility | Credit Facility | Subsequent Event | Senior Facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility | £					£ 255,000,000
Cabot securitisation senior facility | Credit Facility | Subsequent Event | Sterling Overnight Index Average (SONIA) | Senior Facility
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)		3.20%
Cabot securitisation senior facility | Credit Facility | Subsequent Event | Step-Up Margin | Senior Facility | Minimum
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)		0.00%
Cabot securitisation senior facility | Credit Facility | Subsequent Event | Step-Up Margin | Senior Facility | Maximum
Earnings per Basic and Diluted Shares [Line Items]
Basis spread on variable rate (as a percent)		1.00%
Global senior secured revolving credit facility | Credit Facility | Revolving Credit Facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility							$ 1,180,000
Global senior secured revolving credit facility | Credit Facility | Subsequent Event | Revolving Credit Facility
Earnings per Basic and Diluted Shares [Line Items]
Revolving credit facility	$ 1,203,000
Line of credit increase	$ 23,000