Well, it does take 1,000,000 pounds airborne, it just includes the jet, fuel, people, etc. + the payload.
It's Maximum TakeOff Weight is one third of one million pounds, approximately.
Wikipedia lists the Il 76D MTOW as 346,000 pounds.
Victorsite.net says "374,780 pounds".
There is also a streched variant, Il 76MF listed at 463,050 pounds MTOW.
You might be thinking of the An 225
It "takes airbourne" almost four times the original Il 76 MTOW.