The cell menu of a PivotTable's value, subtotal or grand total cell now
has a Show Details item after Sort Z to A. It runs pivot.showDetails on
the active cell, which lists the cell's source records on a new sheet,
as double-clicking the cell does. Labels and headers of a current
report, and cells outside a report, do not offer it. In a report that
is out of date every cell of the report offers the item, and running it
shows the message that asks for a refresh.
Whether the menu offers the item is cached per document, revision,
sheet and active cell.