He's been a bodybuilding icon, a Hollywood action hero, and even the Governor of California. And now, according to Forbes, Arnold Schwarzenegger has become the latest actor to join the exclusive billionaire club.

However, the movie icon hasn't relied solely on acting to amass his wealth. Over the years, Schwarzenegger has racked up the dollars in several surprising ways.

Read on to discover how Arnie built his staggering fortune, and find out how his five children are boosting their bank balances too.

All dollar amounts in US dollars, unless otherwise stated.