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v3.22.4

Investments in Limited Partnerships - Additional Information (Detail) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) Partnership | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Schedule of Investments [Line Items] |  |  |
Unfunded equity commitments in other liabilities | $ 14,505,243 | $ 14,233,959 |
Tax benefits including low-income housing and historic tax credits | 44,288 | 59,589 | $ 23,035
Partnerships losses and impairment | $ 3,600 | 3,400 | 3,300
Number of limited partnerships held | Partnership | 5 |  |
(Losses) gains related to equity method investments | $ 192,113 | 242,260 | 122,044
Equity Method Investments [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Tax benefits including low-income housing and historic tax credits | 3,500 | 3,100 | 3,200
Limited Liability Company [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Amount invested in partnerships | 3,300 | 9,900 |
Limited Liability Company [Member] | Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Partnership (loss) income under equity method | (900) | 3,600 | $ (600)
(Losses) gains related to equity method investments | (1,000) | 3,800 |
Variable Interest Entity, Not Primary Beneficiary [Member] | Other Assets [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Amount invested in partnerships | 34,200 | 27,900 |
Variable Interest Entity, Not Primary Beneficiary [Member] | Other Liabilities [Member] |  |  |
Schedule of Investments [Line Items] |  |  |
Unfunded equity commitments in other liabilities | $ 15,100 | $ 12,500 |

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