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Commitments, Contingencies and Off-Balance Sheet Arrangements - Off-Balance Sheet Commitments (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Amount of Commitment Expiration by Period - 2021 | $ 0.2
Amount of Commitment Expiration by Period - 2022 | 0.2
Amount of Commitment Expiration by Period - 2023 | 0.2
Amount of Commitment Expiration by Period - 2024 | 0.2
Amount of Commitment Expiration by Period - 2025 | 0.2
Amount of Commitment Expiration by Period - Thereafter | 18.6
Total Amounts Committed | 19.6
Financial Guarantees [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Amount of Commitment Expiration by Period - 2021 | 0.2
Amount of Commitment Expiration by Period - 2022 | 0.2
Amount of Commitment Expiration by Period - 2023 | 0.2
Amount of Commitment Expiration by Period - 2024 | 0.2
Amount of Commitment Expiration by Period - 2025 | 0.2
Amount of Commitment Expiration by Period - Thereafter | 0.2
Total Amounts Committed | 1.2
Letters of Credit [Member] |
Commitments Contingencies And Off Balance Sheet Arrangements [Line Items] |
Amount of Commitment Expiration by Period - Thereafter | 18.4
Total Amounts Committed | $ 18.4

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- Details
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