U.S. President Obama signed the Children and Family Services Innovation and Improvement Act, H.R. 2883, which specifically references XBRL.

The text of the new law is here:

The data standardization provision is in Section 105 which amends the Social Security Act to require the Secretary of the Department of Health and Human Services to designate mmon data elements and mmon data reporting standards to ern the reports that states must submit to the Federal ernment on how they spend child welfare funds that they receive from the Federal ernment.  The provision expressly requires the Secretary of the Department of Health and Human Services to “inrporate existing nonproprietary standards, such as the eXtensible Business Reporting Language.”