Displays the unique internal ID that DoubleClick Search assigns to each engine account, campaign, ad group, keyword, bid strategy and other DS object.
Steps to access this column:
Navigate to any reporting table, such as a keywords reporting table.
Click the Columns button above the performance summary graph.
Next to Available columns, type the column name in the search box and press the Enter key.
Click + next to the column name in the Available columns list.