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Reserves for Credit Losses (Details) | Dec. 31, 2021 | Dec. 31, 2020
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U.S. Unemployment Rate | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.05 |
U.S. Unemployment Rate | Minimum | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input |  | 0.07
U.S. Unemployment Rate | Minimum | First quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.07
U.S. Unemployment Rate | Minimum | Fourth quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.06
U.S. Unemployment Rate | Minimum | Fourth quarter of 2023 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.03 | 0.04
U.S. Unemployment Rate | Maximum | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input |  | 0.11
U.S. Unemployment Rate | Maximum | First quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.07 | 0.11
U.S. Unemployment Rate | Maximum | Fourth quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.09 | 0.12
U.S. Unemployment Rate | Maximum | Fourth quarter of 2023 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.07 | 0.10
U.S. GDP Growth (Contraction) | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.07 |
U.S. GDP Growth (Contraction) | Minimum | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input |  | 0.06
U.S. GDP Growth (Contraction) | Minimum | First quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.06 | 0.05
U.S. GDP Growth (Contraction) | Minimum | Fourth quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.02 | 0.04
U.S. GDP Growth (Contraction) | Minimum | Fourth quarter of 2023 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.05
U.S. GDP Growth (Contraction) | Maximum | Fourth quarter of 2021 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input |  | (0.02)
U.S. GDP Growth (Contraction) | Maximum | First quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | (0.04) | (0.02)
U.S. GDP Growth (Contraction) | Maximum | Fourth quarter of 2022 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.01 | 0.03
U.S. GDP Growth (Contraction) | Maximum | Fourth quarter of 2023 |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |
Financing receivable, reserves for credit losses, measurement input | 0.03 | 0.03

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