Here in the UK, all central government bodies that produce Annual Reports and Accounts in accordance with HM Treasury’s Government Financial Reporting Manual (FReM) are required to include a section in their Annual Report covering their performance on sustainability from 2011-2012. This year, 2010-2011, is termed the ‘dry-run’ year - a bit like when the S.E.C. trialled XBRL with its voluntary filing program.
The sustainability reporting required is relatively simple but we are warned that ‘the guidance will be updated annually‘ – Government code for expect more complex compliance to come. Note that there is no mention of XBRL so far but the guidance contains lots of excellent information on what a sustainability report could look like and how it is constructed. How soon before the US follows?