@rcepuch , assuming that you are reporting DIVs from a brokers' consolidated report or from a mutual fund etc., yes you may very well have multiple countries for source income and foreign taxes paid. Absent any other specific situations, you should use Various for the source country name, total Foreign source income and total foreign taxes paid to these countries. Your usage of details in back-up sheet is the best way to proceed.
The basis adjustment is generally not applicable because most often this relates to adjusting the basis to allow for tax treaty based tax rate by the US. Note that the allowable FTC is the lower of actual paid and that imposed by the US and it is also not a refundable credit ( thus may get limited by your otherwise tax liability ).
So , unless you are a directly investing and reaping benefits from foreign source, the adjustment of basis is zero i.e. adjusted basis is the same as the in vested amount ( that generates the dividend/interest / etc. income).
Does this make sense ? Is there more I can do for you ?
