Contexts: Every piece of
financial data in an instance document must be associated with a context.A context provides additional meta data, particularly the period it is reported in.In addition, each context can also provide Segment (Ex. Business Unit or Revenue Center) and
information Ex. Restated, Unaudited, etc.) information.
Precision or Decimal are used on numeric values. In this example, a Precision of 9 is given. This means that the first 9 digits, counting from
the left, starting at the first non-zero digit of the value are known to be trustworthy
for the purposes of computations to be performed using that numeric fact. A Decimal
of 2 would indicate that the value of the numeric fact is
known to be correct to 2 decimal places.