A little searching finds only one company that really fits the bill. Costco has a market cap of $433B and had a reported $14.8B cash on hand as of May 11. That's an interesting possibility that I wouldn't have guessed. Costco is less evil than most big corporations, so that's a little hopeful if I got it right.

Oracle comes close with a market cap of $583B. That's indeed over $400B, but that would make the description a bit weird. In any case, Oracle makes more sense from a business angle. Unfortunately, they are near the top of the evil scale.