Derivative Instruments and Hedging Activities Options on U.S. Treasury Futures (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2022 |
Dec. 31, 2021 |
Mar. 31, 2021 |
Dec. 31, 2020 |
|
| Derivative [Line Items] | ||||
| Derivative, Notional Amount | $ 18,878,215,000 | $ 17,159,801,000 | $ 19,137,094,000 | $ 23,932,603,000 |
| Options on U.S. Treasury Futures [Member] | U.S. Treasury Futures [Member] | ||||
| Derivative [Line Items] | ||||
| Derivative, Notional Amount | 2,000,000 | 0 | ||
| Fair Value | $ 0 | $ 0 | ||
| Weighted Average Remaining Maturity | 50 days | 0 days |
| X | ||||||||||
- Definition Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
| X | ||||||||||
- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Nominal or face amount used to calculate payment on derivative. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|