For macs, it's just called 'Helvetica.dfont', and if you get the Helvetica font on Windows, you will have dozens of options, and none of them are simply 'Helvetica'. But the names are not the same, and there are so many varieties, it's hard to tell which is the exact equivalent. If you want to use Helvetica on Windows, you have to get one of the fonts from Adobe or Linotype, or whatever. I want to know what Helvetica font is the SAME as the default Helvetica font that comes standard on Mac computers. Now, most google searches will say that Arial is the equivalent of Helvetica on Windows.

I have documents that have been created on a Mac, and now I want to use these documents in Windows without altering the font at all.

So, I'm trying to figure out what is the EXACT windows equivalent for Helvetica on Windows.