Outstanding Exposure - Amortization Schedule of Puerto Rico Net Par Outstanding and Net Debt Service Outstanding (Details) - USD ($) $ in Millions	Sep. 30, 2023	Aug. 31, 2023	Dec. 31, 2022
Scheduled Net Par Amortization
Total	$ 241,833	$ 108	$ 233,258
Scheduled Net Debt Service Amortization
Total	383,976		369,951
Puerto Rico
Scheduled Net Par Amortization
2023 (October 1 - December 31)	0
2024 (January 1 - March 31)	0
2024 (April 1 - June 30)	0
2024 (July 1 - September 30)	110
2023 (October 1 - December 31)	0
Subtotal 2024	110
2025	84
2026	140
2027	120
2028-2032	293
2033-2037	235
2038-2041	123
Total	1,105		$ 1,361
Scheduled Net Debt Service Amortization
2023 (October 1 - December 31)	3
2024 (January 1 - March 31)	24
2024 (April 1 - June 30)	3
2024 (July 1 - September 30)	134
2024 (October 1 - December 31)	3
Subtotal 2024	164
2025	132
2026	185
2027	158
2028-2032	427
2033-2037	302
2038-2041	140
Total	$ 1,511