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CECL (Details 15) | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($) | Dec. 31, 2022
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Number of Macroeconomic Scenarios | 3 |
Number of Macroeconomic Factors | 38 |
Scenario, Macroeconomic scenario, Downside [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Macroeconomic Scenario Probability, in percent |  | 40.00%
Scenario, Macroeconomic scenario, Mild Downside [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Macroeconomic Scenario Probability, in percent | 15.00% |
Scenario, Macroeconomic scenario, Severe Downside [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Macroeconomic Scenario Probability, in percent | 25.00% |
Scenario, Macroeconomic scenario, Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | (1.70%)
Scenario, Macroeconomic scenario, Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | (0.90%)
Scenario, Macroeconomic scenario, Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 0.00%
Scenario, Macroeconomic scenario, Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 3.40%
Scenario, Macroeconomic scenario, Downside, Forecast, One year [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | (6.80%)
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (0.60%) |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 2.20% |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (1.00%) |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (1.00%) |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 10,096 |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, One year [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 42,458 |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (3.30%) |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (1.50%) |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 0.70% |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 3.30% |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 8,614 |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, One year [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 31,758 |
Scenario, Macroeconomic scenario, Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 0.50%
Scenario, Macroeconomic scenario, Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 2.10%
Scenario, Macroeconomic scenario, Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 1.00%
Scenario, Macroeconomic scenario, Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 2.30%
Scenario, Macroeconomic scenario, Downside, Forecast, Two years [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 0.40%
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 0.30% |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 3.30% |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 0.00% |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 0.40% |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 10,930 |
Scenario, Macroeconomic scenario, Mild Downside, Forecast, Two years [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 38,392 |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | (1.20%) |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 1.40% |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 2.00% |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 2.10% |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 10,391 |
Scenario, Macroeconomic scenario, Severe Downside, Forecast, Two years [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 25,269 |
Scenario, Macroeconomic scenario, Baseline [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Macroeconomic Scenario Probability, in percent | 60.00% | 50.00%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 0.70% | 0.90%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 4.10% | 4.50%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 2.70% | 2.70%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 3.90% | 5.20%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 1.20%
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 12,552 |
Scenario, Macroeconomic scenario, Baseline, Forecast, One year [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 49,865 |
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 2.40% | 1.50%
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 4.80% | 4.90%
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 3.20% | 2.00%
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent | 3.20% | 4.10%
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 1.90%
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Avg Earnings Bulk Carrier (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 12,346 |
Scenario, Macroeconomic scenario, Baseline, Forecast, Two years [Member] | Avg Earnings Tanker (USD per Day) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast | $ 53,895 |
Scenario, Macroeconomic scenario, Upside [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Macroeconomic Scenario Probability, in percent |  | 10.00%
Scenario, Macroeconomic scenario, Upside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 1.20%
Scenario, Macroeconomic scenario, Upside, Forecast, One year [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 6.20%
Scenario, Macroeconomic scenario, Upside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 3.20%
Scenario, Macroeconomic scenario, Upside, Forecast, One year [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 5.50%
Scenario, Macroeconomic scenario, Upside, Forecast, One year [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 3.90%
Scenario, Macroeconomic scenario, Upside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | UNITED STATES [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 2.00%
Scenario, Macroeconomic scenario, Upside, Forecast, Two years [Member] | Real GDP growth rate (%YoY) [Member] | CHINA [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 5.80%
Scenario, Macroeconomic scenario, Upside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | SWITZERLAND [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 2.10%
Scenario, Macroeconomic scenario, Upside, Forecast, Two years [Member] | Nominal GDP growth rate (%YoY) [Member] | European Union (EU) [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 3.80%
Scenario, Macroeconomic scenario, Upside, Forecast, Two years [Member] | Industrial production (%YoY) [Member] | World [Member] |  |
Allowance for Credit Loss, Macroeconomic scenarios [Line Items] |  |
Allowance for Credit Losses, Macroeconomic Forecast, in percent |  | 3.90%

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