Different values for US Public Debt, why? In this OECD link we have the US General government debt. The value is close to 120% of GDP.

However, the wikipedia has the US Federal Gov debt at 80%.

Why is there such a difference? What debt is being considered by the OECD, that is not by the wikipedia graph?

Any help would be appreciated
The OECD number includes intragovernmental debt, which is debt not held by the public, while the Wikipedia number does not. One of the largest of these debts (several trillion dollars) is related to Social Security, which is a debt owed by the federal government to the Social Security Trust Fund. A review of the history of this debt and its implications is available from the Social Security Administration.