He is being called the greatest living retailer on the planet - and he's a Kiwi.

Greg Foran runs Walmart US, part of the largest retail chain in the world which globally earns more money than Apple.

The man from Hamilton, who started out stacking shelves at the local supermarket, now oversees a million staff.

US Correspondent Rebecca Wright went to Bentonville, Arkansas the home of Walmart to meet the Kiwi CEO.

Watch the full interview above.