Reserves for Credit Losses (Details) | Mar. 31, 2021 | Dec. 31, 2020 |
U.S. Unemployment Rate | First quarter of 2021 | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.06 | |
U.S. Unemployment Rate | First quarter of 2021 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | | 0.07 |
U.S. Unemployment Rate | First quarter of 2021 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | | 0.08 |
U.S. Unemployment Rate | Fourth quarter of 2021 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.06 | 0.07 |
U.S. Unemployment Rate | Fourth quarter of 2021 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.09 | 0.11 |
U.S. Unemployment Rate | Fourth quarter of 2022 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.06 |
U.S. Unemployment Rate | Fourth quarter of 2022 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.11 | 0.12 |
U.S. Unemployment Rate | Fourth quarter of 2023 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.04 |
U.S. Unemployment Rate | Fourth quarter of 2023 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.10 | 0.10 |
U.S. GDP Growth (Contraction) | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.03 | |
U.S. GDP Growth (Contraction) | First quarter of 2021 | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.03 | |
U.S. GDP Growth (Contraction) | First quarter of 2021 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | | 0.04 |
U.S. GDP Growth (Contraction) | First quarter of 2021 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | | (0.05) |
U.S. GDP Growth (Contraction) | Fourth quarter of 2021 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.06 | 0.06 |
U.S. GDP Growth (Contraction) | Fourth quarter of 2021 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | (0.02) | (0.02) |
U.S. GDP Growth (Contraction) | Fourth quarter of 2022 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.04 | 0.04 |
U.S. GDP Growth (Contraction) | Fourth quarter of 2022 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.02 | 0.03 |
U.S. GDP Growth (Contraction) | Fourth quarter of 2023 | Minimum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.05 | 0.05 |
U.S. GDP Growth (Contraction) | Fourth quarter of 2023 | Maximum | | |
Financing Receivable, Allowance for Credit Loss [Line Items] | | |
Financing receivable, reserves for credit losses, measurement input | 0.02 | 0.03 |