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Disclosures About Offsetting Assets and Liabilities - Financial Liabilities and Derivative Liabilities that are Subject to Offset (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Offsetting Liabilities [Line Items] |  |
Gross amounts of recognized liabilities, Securities lending | $ (168,740) | $ (149,219)
Net amounts presented in the Statement of Financial Condition, Securities lending | (168,740) | (149,219)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities lending | 27,784 | 40,259
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities lending | 140,951 | 108,955
Securities lending, Net amount | (5) | (5)
Gross amounts of recognized liabilities, Securities purchased under agreements to resell | (257,759) | (385,528)
Net amounts presented in the Statement of Financial Condition, Securities purchased under agreements to resell | (257,759) | (385,528)
Gross amounts not offset in the Statement of Financial Position, Financial instruments, Securities purchased under agreements to resell | 28,860 | 52,413
Gross amounts not offset in the Statement of Financial Position, Collateral pledged, Securities purchased under agreements to resell | 228,899 | 333,115
Gross amounts of recognized liabilities | (578,606) | (586,894)
Net amounts presented in the Statement of Financial Condition | (578,606) | (586,894)
Gross amounts not offset in the Statement of Financial Position, Financial instruments | 57,951 | 117,821
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged | 399,278 | 469,068
Net amount | (121,377) | (5)
Interest Rate Contract [Member] |  |
Offsetting Liabilities [Line Items] |  |
Gross amounts of recognized liabilities | (152,107) | (52,147)
Net amounts presented in the Statement of Financial Condition | (152,107) | (52,147)
Gross amounts not offset in the Statement of Financial Position, Financial instruments | 1,307 | 25,149
Gross amounts not offset in the Statement of Financial Condition, Collateral pledged | 29,428 | $ 26,998
Offsetting liability interest rate contracts net | $ (121,372) |

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