There just aren't that many opportunities in the world that are that big, and for a company like Walmart that needs to move the needle in a big way, you have to take some big bets, but if you're going to take that much risk, the reward has to match up.

My own view is that every company requires a long-term view.

As it relates to brick-and-mortar, we've seen it all and done it all. We operate around the world in different formats, different brands. We've got large stores, small stores, all these different formats. So we know that space pretty well, but the e-commerce business was different.

We're an omni retailer, so we've got things going on ecommerce-wise, stores-wise, marketing-wise.

The world is a better place with Walmart in it.

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